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Finding the Fourth Proportional to 591,387.90, 887,081.76 and 142,108.77

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Solution

The fourth proportional to 591,387.90, 887,081.76 and 142,108.77 is: 213,163.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,387.90 : 887,081.76 = 142,108.77 : x
  2. Step 2: Convert to fraction form
    591,387.90/887,081.76 = 142,108.77/x
  3. Step 3: Cross multiply
    591,387.90x = 887,081.76 × 142,108.77
  4. Step 4: Simplify right side
    591,387.90x = 126,062,097,699.08
  5. Step 5: Solve for x
    x = 126,062,097,699.08/591,387.90
  6. Step 6: Final answer
    x = 213,163.13

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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.