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Finding the Fourth Proportional to 108,051.30, 161,870.40 and 58,114.80

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Solution

The fourth proportional to 108,051.30, 161,870.40 and 58,114.80 is: 87,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,051.30 : 161,870.40 = 58,114.80 : x
  2. Step 2: Convert to fraction form
    108,051.30/161,870.40 = 58,114.80/x
  3. Step 3: Cross multiply
    108,051.30x = 161,870.40 × 58,114.80
  4. Step 4: Simplify right side
    108,051.30x = 9,407,065,921.92
  5. Step 5: Solve for x
    x = 9,407,065,921.92/108,051.30
  6. Step 6: Final answer
    x = 87,061.11

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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.