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Finding the Fourth Proportional to 124,728.48, 186,962.04 and 58,113.68

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Solution

The fourth proportional to 124,728.48, 186,962.04 and 58,113.68 is: 87,109.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,728.48 : 186,962.04 = 58,113.68 : x
  2. Step 2: Convert to fraction form
    124,728.48/186,962.04 = 58,113.68/x
  3. Step 3: Cross multiply
    124,728.48x = 186,962.04 × 58,113.68
  4. Step 4: Simplify right side
    124,728.48x = 10,865,051,229.90
  5. Step 5: Solve for x
    x = 10,865,051,229.90/124,728.48
  6. Step 6: Final answer
    x = 87,109.63

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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.