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Finding the Fourth Proportional to 621,877.59, 932,816.39 and 343,166.31

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Solution

The fourth proportional to 621,877.59, 932,816.39 and 343,166.31 is: 514,749.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,877.59 : 932,816.39 = 343,166.31 : x
  2. Step 2: Convert to fraction form
    621,877.59/932,816.39 = 343,166.31/x
  3. Step 3: Cross multiply
    621,877.59x = 932,816.39 × 343,166.31
  4. Step 4: Simplify right side
    621,877.59x = 320,111,156,747.99
  5. Step 5: Solve for x
    x = 320,111,156,747.99/621,877.59
  6. Step 6: Final answer
    x = 514,749.47

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.