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Finding the Fourth Proportional to 361,643.01, 542,390.40 and 136,925.93

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Solution

The fourth proportional to 361,643.01, 542,390.40 and 136,925.93 is: 205,360.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,643.01 : 542,390.40 = 136,925.93 : x
  2. Step 2: Convert to fraction form
    361,643.01/542,390.40 = 136,925.93/x
  3. Step 3: Cross multiply
    361,643.01x = 542,390.40 × 136,925.93
  4. Step 4: Simplify right side
    361,643.01x = 74,267,309,943.07
  5. Step 5: Solve for x
    x = 74,267,309,943.07/361,643.01
  6. Step 6: Final answer
    x = 205,360.83

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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.