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Finding the Fourth Proportional to 106,990.57, 147,645.18 and 59,242.89

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Solution

The fourth proportional to 106,990.57, 147,645.18 and 59,242.89 is: 81,754.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,990.57 : 147,645.18 = 59,242.89 : x
  2. Step 2: Convert to fraction form
    106,990.57/147,645.18 = 59,242.89/x
  3. Step 3: Cross multiply
    106,990.57x = 147,645.18 × 59,242.89
  4. Step 4: Simplify right side
    106,990.57x = 8,746,927,157.77
  5. Step 5: Solve for x
    x = 8,746,927,157.77/106,990.57
  6. Step 6: Final answer
    x = 81,754.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.