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Finding the Fourth Proportional to 432,331.80, 648,108.90 and 282,643.80

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Solution

The fourth proportional to 432,331.80, 648,108.90 and 282,643.80 is: 423,711.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,331.80 : 648,108.90 = 282,643.80 : x
  2. Step 2: Convert to fraction form
    432,331.80/648,108.90 = 282,643.80/x
  3. Step 3: Cross multiply
    432,331.80x = 648,108.90 × 282,643.80
  4. Step 4: Simplify right side
    432,331.80x = 183,183,962,309.82
  5. Step 5: Solve for x
    x = 183,183,962,309.82/432,331.80
  6. Step 6: Final answer
    x = 423,711.52

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1.5x scale

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.