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Finding the Fourth Proportional to 153,500.40, 211,830.36 and 86,432.88

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Solution

The fourth proportional to 153,500.40, 211,830.36 and 86,432.88 is: 119,277.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,500.40 : 211,830.36 = 86,432.88 : x
  2. Step 2: Convert to fraction form
    153,500.40/211,830.36 = 86,432.88/x
  3. Step 3: Cross multiply
    153,500.40x = 211,830.36 × 86,432.88
  4. Step 4: Simplify right side
    153,500.40x = 18,309,108,086.24
  5. Step 5: Solve for x
    x = 18,309,108,086.24/153,500.40
  6. Step 6: Final answer
    x = 119,277.27

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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.