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Finding the Fourth Proportional to 461,718.40, 692,512.80 and 146,207.20

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Solution

The fourth proportional to 461,718.40, 692,512.80 and 146,207.20 is: 219,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,718.40 : 692,512.80 = 146,207.20 : x
  2. Step 2: Convert to fraction form
    461,718.40/692,512.80 = 146,207.20/x
  3. Step 3: Cross multiply
    461,718.40x = 692,512.80 × 146,207.20
  4. Step 4: Simplify right side
    461,718.40x = 101,250,357,452.16
  5. Step 5: Solve for x
    x = 101,250,357,452.16/461,718.40
  6. Step 6: Final answer
    x = 219,290.28

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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.