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Finding the Fourth Proportional to 71,309.59, 106,844.10 and 46,312.18

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Solution

The fourth proportional to 71,309.59, 106,844.10 and 46,312.18 is: 69,390.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,309.59 : 106,844.10 = 46,312.18 : x
  2. Step 2: Convert to fraction form
    71,309.59/106,844.10 = 46,312.18/x
  3. Step 3: Cross multiply
    71,309.59x = 106,844.10 × 46,312.18
  4. Step 4: Simplify right side
    71,309.59x = 4,948,183,191.14
  5. Step 5: Solve for x
    x = 4,948,183,191.14/71,309.59
  6. Step 6: Final answer
    x = 69,390.15

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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.