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Finding the Fourth Proportional to 618,766.68, 853,829.54 and 343,117.60

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Solution

The fourth proportional to 618,766.68, 853,829.54 and 343,117.60 is: 473,464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,766.68 : 853,829.54 = 343,117.60 : x
  2. Step 2: Convert to fraction form
    618,766.68/853,829.54 = 343,117.60/x
  3. Step 3: Cross multiply
    618,766.68x = 853,829.54 × 343,117.60
  4. Step 4: Simplify right side
    618,766.68x = 292,963,942,573.90
  5. Step 5: Solve for x
    x = 292,963,942,573.90/618,766.68
  6. Step 6: Final answer
    x = 473,464.32

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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.