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Finding the Fourth Proportional to 106,312.10, 159,468.15 and 101,128.10

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Solution

The fourth proportional to 106,312.10, 159,468.15 and 101,128.10 is: 151,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,312.10 : 159,468.15 = 101,128.10 : x
  2. Step 2: Convert to fraction form
    106,312.10/159,468.15 = 101,128.10/x
  3. Step 3: Cross multiply
    106,312.10x = 159,468.15 × 101,128.10
  4. Step 4: Simplify right side
    106,312.10x = 16,126,711,020.02
  5. Step 5: Solve for x
    x = 16,126,711,020.02/106,312.10
  6. Step 6: Final answer
    x = 151,692.15

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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.