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Finding the Fourth Proportional to 518,616.57, 714,062.19 and 440,939.46

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Solution

The fourth proportional to 518,616.57, 714,062.19 and 440,939.46 is: 607,111.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,616.57 : 714,062.19 = 440,939.46 : x
  2. Step 2: Convert to fraction form
    518,616.57/714,062.19 = 440,939.46/x
  3. Step 3: Cross multiply
    518,616.57x = 714,062.19 × 440,939.46
  4. Step 4: Simplify right side
    518,616.57x = 314,858,196,465.02
  5. Step 5: Solve for x
    x = 314,858,196,465.02/518,616.57
  6. Step 6: Final answer
    x = 607,111.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.