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Finding the Fourth Proportional to 432,101.80, 648,152.70 and 274,443.40

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Solution

The fourth proportional to 432,101.80, 648,152.70 and 274,443.40 is: 411,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,101.80 : 648,152.70 = 274,443.40 : x
  2. Step 2: Convert to fraction form
    432,101.80/648,152.70 = 274,443.40/x
  3. Step 3: Cross multiply
    432,101.80x = 648,152.70 × 274,443.40
  4. Step 4: Simplify right side
    432,101.80x = 177,881,230,707.18
  5. Step 5: Solve for x
    x = 177,881,230,707.18/432,101.80
  6. Step 6: Final answer
    x = 411,665.10

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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.