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Finding the Fourth Proportional to 64,424.86, 88,902.29 and 38,916.15

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Solution

The fourth proportional to 64,424.86, 88,902.29 and 38,916.15 is: 53,701.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,424.86 : 88,902.29 = 38,916.15 : x
  2. Step 2: Convert to fraction form
    64,424.86/88,902.29 = 38,916.15/x
  3. Step 3: Cross multiply
    64,424.86x = 88,902.29 × 38,916.15
  4. Step 4: Simplify right side
    64,424.86x = 3,459,734,607.25
  5. Step 5: Solve for x
    x = 3,459,734,607.25/64,424.86
  6. Step 6: Final answer
    x = 53,701.86

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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.