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Finding the Fourth Proportional to 423,686.22, 584,442.91 and 253,821.93

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Solution

The fourth proportional to 423,686.22, 584,442.91 and 253,821.93 is: 350,128.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,686.22 : 584,442.91 = 253,821.93 : x
  2. Step 2: Convert to fraction form
    423,686.22/584,442.91 = 253,821.93/x
  3. Step 3: Cross multiply
    423,686.22x = 584,442.91 × 253,821.93
  4. Step 4: Simplify right side
    423,686.22x = 148,344,427,391.02
  5. Step 5: Solve for x
    x = 148,344,427,391.02/423,686.22
  6. Step 6: Final answer
    x = 350,128.04

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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.