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Finding the Fourth Proportional to 61,135.92, 84,291.40 and 48,363.92

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Solution

The fourth proportional to 61,135.92, 84,291.40 and 48,363.92 is: 66,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,135.92 : 84,291.40 = 48,363.92 : x
  2. Step 2: Convert to fraction form
    61,135.92/84,291.40 = 48,363.92/x
  3. Step 3: Cross multiply
    61,135.92x = 84,291.40 × 48,363.92
  4. Step 4: Simplify right side
    61,135.92x = 4,076,662,526.29
  5. Step 5: Solve for x
    x = 4,076,662,526.29/61,135.92
  6. Step 6: Final answer
    x = 66,681.95

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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.