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Finding the Fourth Proportional to 417,689.55, 576,411.21 and 236,398.23

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Solution

The fourth proportional to 417,689.55, 576,411.21 and 236,398.23 is: 326,229.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,689.55 : 576,411.21 = 236,398.23 : x
  2. Step 2: Convert to fraction form
    417,689.55/576,411.21 = 236,398.23/x
  3. Step 3: Cross multiply
    417,689.55x = 576,411.21 × 236,398.23
  4. Step 4: Simplify right side
    417,689.55x = 136,262,589,796.16
  5. Step 5: Solve for x
    x = 136,262,589,796.16/417,689.55
  6. Step 6: Final answer
    x = 326,229.35

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1.5x scale

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.