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Finding the Fourth Proportional to 432,130.60, 648,195.90 and 357,335.20

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Solution

The fourth proportional to 432,130.60, 648,195.90 and 357,335.20 is: 536,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,130.60 : 648,195.90 = 357,335.20 : x
  2. Step 2: Convert to fraction form
    432,130.60/648,195.90 = 357,335.20/x
  3. Step 3: Cross multiply
    432,130.60x = 648,195.90 × 357,335.20
  4. Step 4: Simplify right side
    432,130.60x = 231,623,211,565.68
  5. Step 5: Solve for x
    x = 231,623,211,565.68/432,130.60
  6. Step 6: Final answer
    x = 536,002.80

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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.