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Finding the Fourth Proportional to 58,991.40, 88,487.10 and 53,159.40

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Solution

The fourth proportional to 58,991.40, 88,487.10 and 53,159.40 is: 79,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,991.40 : 88,487.10 = 53,159.40 : x
  2. Step 2: Convert to fraction form
    58,991.40/88,487.10 = 53,159.40/x
  3. Step 3: Cross multiply
    58,991.40x = 88,487.10 × 53,159.40
  4. Step 4: Simplify right side
    58,991.40x = 4,703,921,143.74
  5. Step 5: Solve for x
    x = 4,703,921,143.74/58,991.40
  6. Step 6: Final answer
    x = 79,739.10

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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.