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Finding the Fourth Proportional to 359,517.83, 539,236.91 and 128,697.63

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Solution

The fourth proportional to 359,517.83, 539,236.91 and 128,697.63 is: 193,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,517.83 : 539,236.91 = 128,697.63 : x
  2. Step 2: Convert to fraction form
    359,517.83/539,236.91 = 128,697.63/x
  3. Step 3: Cross multiply
    359,517.83x = 539,236.91 × 128,697.63
  4. Step 4: Simplify right side
    359,517.83x = 69,398,510,625.13
  5. Step 5: Solve for x
    x = 69,398,510,625.13/359,517.83
  6. Step 6: Final answer
    x = 193,032.18

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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.