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Finding the Fourth Proportional to 393,637.22, 590,549.53 and 127,397.73

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Solution

The fourth proportional to 393,637.22, 590,549.53 and 127,397.73 is: 191,126.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,637.22 : 590,549.53 = 127,397.73 : x
  2. Step 2: Convert to fraction form
    393,637.22/590,549.53 = 127,397.73/x
  3. Step 3: Cross multiply
    393,637.22x = 590,549.53 × 127,397.73
  4. Step 4: Simplify right side
    393,637.22x = 75,234,670,363.35
  5. Step 5: Solve for x
    x = 75,234,670,363.35/393,637.22
  6. Step 6: Final answer
    x = 191,126.92

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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.