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Finding the Fourth Proportional to 432,411.80, 648,617.70 and 373,314.20

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Solution

The fourth proportional to 432,411.80, 648,617.70 and 373,314.20 is: 559,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,411.80 : 648,617.70 = 373,314.20 : x
  2. Step 2: Convert to fraction form
    432,411.80/648,617.70 = 373,314.20/x
  3. Step 3: Cross multiply
    432,411.80x = 648,617.70 × 373,314.20
  4. Step 4: Simplify right side
    432,411.80x = 242,138,197,781.34
  5. Step 5: Solve for x
    x = 242,138,197,781.34/432,411.80
  6. Step 6: Final answer
    x = 559,971.30

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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.