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Finding the Fourth Proportional to 393,655.70, 590,577.29 and 127,416.26

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Solution

The fourth proportional to 393,655.70, 590,577.29 and 127,416.26 is: 191,154.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,655.70 : 590,577.29 = 127,416.26 : x
  2. Step 2: Convert to fraction form
    393,655.70/590,577.29 = 127,416.26/x
  3. Step 3: Cross multiply
    393,655.70x = 590,577.29 × 127,416.26
  4. Step 4: Simplify right side
    393,655.70x = 75,249,149,532.74
  5. Step 5: Solve for x
    x = 75,249,149,532.74/393,655.70
  6. Step 6: Final answer
    x = 191,154.73

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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.