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Finding the Fourth Proportional to 127,864.59, 176,453.55 and 69,720.90

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Solution

The fourth proportional to 127,864.59, 176,453.55 and 69,720.90 is: 96,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,864.59 : 176,453.55 = 69,720.90 : x
  2. Step 2: Convert to fraction form
    127,864.59/176,453.55 = 69,720.90/x
  3. Step 3: Cross multiply
    127,864.59x = 176,453.55 × 69,720.90
  4. Step 4: Simplify right side
    127,864.59x = 12,302,500,314.20
  5. Step 5: Solve for x
    x = 12,302,500,314.20/127,864.59
  6. Step 6: Final answer
    x = 96,215.07

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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.