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Finding the Fourth Proportional to 124,804.80, 187,207.20 and 118,972.80

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Solution

The fourth proportional to 124,804.80, 187,207.20 and 118,972.80 is: 178,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,804.80 : 187,207.20 = 118,972.80 : x
  2. Step 2: Convert to fraction form
    124,804.80/187,207.20 = 118,972.80/x
  3. Step 3: Cross multiply
    124,804.80x = 187,207.20 × 118,972.80
  4. Step 4: Simplify right side
    124,804.80x = 22,272,564,764.16
  5. Step 5: Solve for x
    x = 22,272,564,764.16/124,804.80
  6. Step 6: Final answer
    x = 178,459.20

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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.