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Finding the Fourth Proportional to 518,755.28, 777,572.28 and 219,166.16

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Solution

The fourth proportional to 518,755.28, 777,572.28 and 219,166.16 is: 328,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,755.28 : 777,572.28 = 219,166.16 : x
  2. Step 2: Convert to fraction form
    518,755.28/777,572.28 = 219,166.16/x
  3. Step 3: Cross multiply
    518,755.28x = 777,572.28 × 219,166.16
  4. Step 4: Simplify right side
    518,755.28x = 170,417,530,730.05
  5. Step 5: Solve for x
    x = 170,417,530,730.05/518,755.28
  6. Step 6: Final answer
    x = 328,512.38

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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.