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Finding the Fourth Proportional to 71,130.60, 106,598.70 and 58,008.60

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Solution

The fourth proportional to 71,130.60, 106,598.70 and 58,008.60 is: 86,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,130.60 : 106,598.70 = 58,008.60 : x
  2. Step 2: Convert to fraction form
    71,130.60/106,598.70 = 58,008.60/x
  3. Step 3: Cross multiply
    71,130.60x = 106,598.70 × 58,008.60
  4. Step 4: Simplify right side
    71,130.60x = 6,183,641,348.82
  5. Step 5: Solve for x
    x = 6,183,641,348.82/71,130.60
  6. Step 6: Final answer
    x = 86,933.63

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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.