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Finding the Fourth Proportional to 64,458.80, 96,688.20 and 34,934.30

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Solution

The fourth proportional to 64,458.80, 96,688.20 and 34,934.30 is: 52,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,458.80 : 96,688.20 = 34,934.30 : x
  2. Step 2: Convert to fraction form
    64,458.80/96,688.20 = 34,934.30/x
  3. Step 3: Cross multiply
    64,458.80x = 96,688.20 × 34,934.30
  4. Step 4: Simplify right side
    64,458.80x = 3,377,734,585.26
  5. Step 5: Solve for x
    x = 3,377,734,585.26/64,458.80
  6. Step 6: Final answer
    x = 52,401.45

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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.