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Finding the Fourth Proportional to 58,985.19, 88,490.93 and 21,545.21

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Solution

The fourth proportional to 58,985.19, 88,490.93 and 21,545.21 is: 32,322.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,985.19 : 88,490.93 = 21,545.21 : x
  2. Step 2: Convert to fraction form
    58,985.19/88,490.93 = 21,545.21/x
  3. Step 3: Cross multiply
    58,985.19x = 88,490.93 × 21,545.21
  4. Step 4: Simplify right side
    58,985.19x = 1,906,555,119.76
  5. Step 5: Solve for x
    x = 1,906,555,119.76/58,985.19
  6. Step 6: Final answer
    x = 32,322.61

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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.