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Finding the Fourth Proportional to 96,987.30, 133,850.25 and 54,543.30

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Solution

The fourth proportional to 96,987.30, 133,850.25 and 54,543.30 is: 75,274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,987.30 : 133,850.25 = 54,543.30 : x
  2. Step 2: Convert to fraction form
    96,987.30/133,850.25 = 54,543.30/x
  3. Step 3: Cross multiply
    96,987.30x = 133,850.25 × 54,543.30
  4. Step 4: Simplify right side
    96,987.30x = 7,300,634,340.83
  5. Step 5: Solve for x
    x = 7,300,634,340.83/96,987.30
  6. Step 6: Final answer
    x = 75,274.13

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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.