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Finding the Fourth Proportional to 374,459.50, 561,689.28 and 125,141.50

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Solution

The fourth proportional to 374,459.50, 561,689.28 and 125,141.50 is: 187,712.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,459.50 : 561,689.28 = 125,141.50 : x
  2. Step 2: Convert to fraction form
    374,459.50/561,689.28 = 125,141.50/x
  3. Step 3: Cross multiply
    374,459.50x = 561,689.28 × 125,141.50
  4. Step 4: Simplify right side
    374,459.50x = 70,290,639,033.12
  5. Step 5: Solve for x
    x = 70,290,639,033.12/374,459.50
  6. Step 6: Final answer
    x = 187,712.26

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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.