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Finding the Fourth Proportional to 74,614.10, 111,921.15 and 74,614.10

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Solution

The fourth proportional to 74,614.10, 111,921.15 and 74,614.10 is: 111,921.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,614.10 : 111,921.15 = 74,614.10 : x
  2. Step 2: Convert to fraction form
    74,614.10/111,921.15 = 74,614.10/x
  3. Step 3: Cross multiply
    74,614.10x = 111,921.15 × 74,614.10
  4. Step 4: Simplify right side
    74,614.10x = 8,350,895,878.22
  5. Step 5: Solve for x
    x = 8,350,895,878.22/74,614.10
  6. Step 6: Final answer
    x = 111,921.15

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1.5x scale

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.