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Finding the Fourth Proportional to 124,018.60, 185,639.10 and 89,026.60

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Solution

The fourth proportional to 124,018.60, 185,639.10 and 89,026.60 is: 133,260.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,018.60 : 185,639.10 = 89,026.60 : x
  2. Step 2: Convert to fraction form
    124,018.60/185,639.10 = 89,026.60/x
  3. Step 3: Cross multiply
    124,018.60x = 185,639.10 × 89,026.60
  4. Step 4: Simplify right side
    124,018.60x = 16,526,817,900.06
  5. Step 5: Solve for x
    x = 16,526,817,900.06/124,018.60
  6. Step 6: Final answer
    x = 133,260.80

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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.