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Finding the Fourth Proportional to 518,666.80, 778,000.20 and 124,682.80

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Solution

The fourth proportional to 518,666.80, 778,000.20 and 124,682.80 is: 187,024.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,666.80 : 778,000.20 = 124,682.80 : x
  2. Step 2: Convert to fraction form
    518,666.80/778,000.20 = 124,682.80/x
  3. Step 3: Cross multiply
    518,666.80x = 778,000.20 × 124,682.80
  4. Step 4: Simplify right side
    518,666.80x = 97,003,243,336.56
  5. Step 5: Solve for x
    x = 97,003,243,336.56/518,666.80
  6. Step 6: Final answer
    x = 187,024.20

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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.