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Finding the Fourth Proportional to 173,859.30, 260,788.95 and 89,619.30

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Solution

The fourth proportional to 173,859.30, 260,788.95 and 89,619.30 is: 134,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,859.30 : 260,788.95 = 89,619.30 : x
  2. Step 2: Convert to fraction form
    173,859.30/260,788.95 = 89,619.30/x
  3. Step 3: Cross multiply
    173,859.30x = 260,788.95 × 89,619.30
  4. Step 4: Simplify right side
    173,859.30x = 23,371,723,146.74
  5. Step 5: Solve for x
    x = 23,371,723,146.74/173,859.30
  6. Step 6: Final answer
    x = 134,428.95

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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.