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Finding the Fourth Proportional to 115,920.40, 173,905.80 and 66,024.40

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Solution

The fourth proportional to 115,920.40, 173,905.80 and 66,024.40 is: 99,050.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920.40 : 173,905.80 = 66,024.40 : x
  2. Step 2: Convert to fraction form
    115,920.40/173,905.80 = 66,024.40/x
  3. Step 3: Cross multiply
    115,920.40x = 173,905.80 × 66,024.40
  4. Step 4: Simplify right side
    115,920.40x = 11,482,026,101.52
  5. Step 5: Solve for x
    x = 11,482,026,101.52/115,920.40
  6. Step 6: Final answer
    x = 99,050.95

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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.