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Finding the Fourth Proportional to 477,871.12, 716,404.92 and 319,616.56

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Solution

The fourth proportional to 477,871.12, 716,404.92 and 319,616.56 is: 479,156.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,871.12 : 716,404.92 = 319,616.56 : x
  2. Step 2: Convert to fraction form
    477,871.12/716,404.92 = 319,616.56/x
  3. Step 3: Cross multiply
    477,871.12x = 716,404.92 × 319,616.56
  4. Step 4: Simplify right side
    477,871.12x = 228,974,876,097.48
  5. Step 5: Solve for x
    x = 228,974,876,097.48/477,871.12
  6. Step 6: Final answer
    x = 479,156.13

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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.