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Finding the Fourth Proportional to 618,208.43, 853,117.56 and 346,275.63

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Solution

The fourth proportional to 618,208.43, 853,117.56 and 346,275.63 is: 477,854.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,208.43 : 853,117.56 = 346,275.63 : x
  2. Step 2: Convert to fraction form
    618,208.43/853,117.56 = 346,275.63/x
  3. Step 3: Cross multiply
    618,208.43x = 853,117.56 × 346,275.63
  4. Step 4: Simplify right side
    618,208.43x = 295,413,820,553.06
  5. Step 5: Solve for x
    x = 295,413,820,553.06/618,208.43
  6. Step 6: Final answer
    x = 477,854.73

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Find fourth proportional to 1,236,416.85, 1,706,235.12 and 692,551.26
Double scale
Find fourth proportional to 618,209.43, 853,118.94 and 346,276.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.