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Finding the Fourth Proportional to 64,711.76, 97,061.25 and 20,337.32

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Solution

The fourth proportional to 64,711.76, 97,061.25 and 20,337.32 is: 30,503.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,711.76 : 97,061.25 = 20,337.32 : x
  2. Step 2: Convert to fraction form
    64,711.76/97,061.25 = 20,337.32/x
  3. Step 3: Cross multiply
    64,711.76x = 97,061.25 × 20,337.32
  4. Step 4: Simplify right side
    64,711.76x = 1,973,966,019.77
  5. Step 5: Solve for x
    x = 1,973,966,019.77/64,711.76
  6. Step 6: Final answer
    x = 30,503.98

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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.