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Finding the Fourth Proportional to 577,376.20, 866,064.30 and 518,327.20

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Solution

The fourth proportional to 577,376.20, 866,064.30 and 518,327.20 is: 777,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,376.20 : 866,064.30 = 518,327.20 : x
  2. Step 2: Convert to fraction form
    577,376.20/866,064.30 = 518,327.20/x
  3. Step 3: Cross multiply
    577,376.20x = 866,064.30 × 518,327.20
  4. Step 4: Simplify right side
    577,376.20x = 448,904,683,638.96
  5. Step 5: Solve for x
    x = 448,904,683,638.96/577,376.20
  6. Step 6: Final answer
    x = 777,490.80

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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.