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Finding the Fourth Proportional to 359,928.21, 539,990.96 and 157,487.63

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Solution

The fourth proportional to 359,928.21, 539,990.96 and 157,487.63 is: 236,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,928.21 : 539,990.96 = 157,487.63 : x
  2. Step 2: Convert to fraction form
    359,928.21/539,990.96 = 157,487.63/x
  3. Step 3: Cross multiply
    359,928.21x = 539,990.96 × 157,487.63
  4. Step 4: Simplify right side
    359,928.21x = 85,041,893,024.43
  5. Step 5: Solve for x
    x = 85,041,893,024.43/359,928.21
  6. Step 6: Final answer
    x = 236,274.60

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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.