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Finding the Fourth Proportional to 61,323.66, 84,690.90 and 42,253.02

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Solution

The fourth proportional to 61,323.66, 84,690.90 and 42,253.02 is: 58,353.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,323.66 : 84,690.90 = 42,253.02 : x
  2. Step 2: Convert to fraction form
    61,323.66/84,690.90 = 42,253.02/x
  3. Step 3: Cross multiply
    61,323.66x = 84,690.90 × 42,253.02
  4. Step 4: Simplify right side
    61,323.66x = 3,578,446,291.52
  5. Step 5: Solve for x
    x = 3,578,446,291.52/61,323.66
  6. Step 6: Final answer
    x = 58,353.44

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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.