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Finding the Fourth Proportional to 64,363.60, 96,610.20 and 31,110.40

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Solution

The fourth proportional to 64,363.60, 96,610.20 and 31,110.40 is: 46,696.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,363.60 : 96,610.20 = 31,110.40 : x
  2. Step 2: Convert to fraction form
    64,363.60/96,610.20 = 31,110.40/x
  3. Step 3: Cross multiply
    64,363.60x = 96,610.20 × 31,110.40
  4. Step 4: Simplify right side
    64,363.60x = 3,005,581,966.08
  5. Step 5: Solve for x
    x = 3,005,581,966.08/64,363.60
  6. Step 6: Final answer
    x = 46,696.92

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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.