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Finding the Fourth Proportional to 111,687.59, 154,130.07 and 60,700.32

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Solution

The fourth proportional to 111,687.59, 154,130.07 and 60,700.32 is: 83,767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,687.59 : 154,130.07 = 60,700.32 : x
  2. Step 2: Convert to fraction form
    111,687.59/154,130.07 = 60,700.32/x
  3. Step 3: Cross multiply
    111,687.59x = 154,130.07 × 60,700.32
  4. Step 4: Simplify right side
    111,687.59x = 9,355,744,267.12
  5. Step 5: Solve for x
    x = 9,355,744,267.12/111,687.59
  6. Step 6: Final answer
    x = 83,767.09

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1.5x scale

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.