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Finding the Fourth Proportional to 115,041.64, 172,329.18 and 59,521

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Solution

The fourth proportional to 115,041.64, 172,329.18 and 59,521 is: 89,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,041.64 : 172,329.18 = 59,521 : x
  2. Step 2: Convert to fraction form
    115,041.64/172,329.18 = 59,521/x
  3. Step 3: Cross multiply
    115,041.64x = 172,329.18 × 59,521
  4. Step 4: Simplify right side
    115,041.64x = 10,257,205,122.78
  5. Step 5: Solve for x
    x = 10,257,205,122.78/115,041.64
  6. Step 6: Final answer
    x = 89,160.80

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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.