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Finding the Fourth Proportional to 64,140.40, 96,340.20 and 61,937.20

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Solution

The fourth proportional to 64,140.40, 96,340.20 and 61,937.20 is: 93,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,140.40 : 96,340.20 = 61,937.20 : x
  2. Step 2: Convert to fraction form
    64,140.40/96,340.20 = 61,937.20/x
  3. Step 3: Cross multiply
    64,140.40x = 96,340.20 × 61,937.20
  4. Step 4: Simplify right side
    64,140.40x = 5,967,042,235.44
  5. Step 5: Solve for x
    x = 5,967,042,235.44/64,140.40
  6. Step 6: Final answer
    x = 93,030.95

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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.