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Finding the Fourth Proportional to 463,719.20, 695,578.80 and 432,384.80

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Solution

The fourth proportional to 463,719.20, 695,578.80 and 432,384.80 is: 648,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,719.20 : 695,578.80 = 432,384.80 : x
  2. Step 2: Convert to fraction form
    463,719.20/695,578.80 = 432,384.80/x
  3. Step 3: Cross multiply
    463,719.20x = 695,578.80 × 432,384.80
  4. Step 4: Simplify right side
    463,719.20x = 300,757,700,322.24
  5. Step 5: Solve for x
    x = 300,757,700,322.24/463,719.20
  6. Step 6: Final answer
    x = 648,577.20

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Similar ratio
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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.