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Finding the Fourth Proportional to 618,655.98, 853,755.35 and 346,784.34

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Solution

The fourth proportional to 618,655.98, 853,755.35 and 346,784.34 is: 478,568.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,655.98 : 853,755.35 = 346,784.34 : x
  2. Step 2: Convert to fraction form
    618,655.98/853,755.35 = 346,784.34/x
  3. Step 3: Cross multiply
    618,655.98x = 853,755.35 × 346,784.34
  4. Step 4: Simplify right side
    618,655.98x = 296,068,985,571.22
  5. Step 5: Solve for x
    x = 296,068,985,571.22/618,655.98
  6. Step 6: Final answer
    x = 478,568.05

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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.