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Finding the Fourth Proportional to 99,707.60, 149,359.80 and 62,152.40

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Solution

The fourth proportional to 99,707.60, 149,359.80 and 62,152.40 is: 93,102.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,707.60 : 149,359.80 = 62,152.40 : x
  2. Step 2: Convert to fraction form
    99,707.60/149,359.80 = 62,152.40/x
  3. Step 3: Cross multiply
    99,707.60x = 149,359.80 × 62,152.40
  4. Step 4: Simplify right side
    99,707.60x = 9,283,070,033.52
  5. Step 5: Solve for x
    x = 9,283,070,033.52/99,707.60
  6. Step 6: Final answer
    x = 93,102.93

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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.