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Finding the Fourth Proportional to 124,553.48, 186,830.42 and 99,751.28

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Solution

The fourth proportional to 124,553.48, 186,830.42 and 99,751.28 is: 149,627.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,553.48 : 186,830.42 = 99,751.28 : x
  2. Step 2: Convert to fraction form
    124,553.48/186,830.42 = 99,751.28/x
  3. Step 3: Cross multiply
    124,553.48x = 186,830.42 × 99,751.28
  4. Step 4: Simplify right side
    124,553.48x = 18,636,572,105.03
  5. Step 5: Solve for x
    x = 18,636,572,105.03/124,553.48
  6. Step 6: Final answer
    x = 149,627.07

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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.