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Finding the Fourth Proportional to 124,521.80, 186,782.70 and 89,529.80

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Solution

The fourth proportional to 124,521.80, 186,782.70 and 89,529.80 is: 134,294.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,521.80 : 186,782.70 = 89,529.80 : x
  2. Step 2: Convert to fraction form
    124,521.80/186,782.70 = 89,529.80/x
  3. Step 3: Cross multiply
    124,521.80x = 186,782.70 × 89,529.80
  4. Step 4: Simplify right side
    124,521.80x = 16,722,617,774.46
  5. Step 5: Solve for x
    x = 16,722,617,774.46/124,521.80
  6. Step 6: Final answer
    x = 134,294.70

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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.