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Finding the Fourth Proportional to 61,690.80, 92,535.90 and 14,943.68

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Solution

The fourth proportional to 61,690.80, 92,535.90 and 14,943.68 is: 22,415.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.80 : 92,535.90 = 14,943.68 : x
  2. Step 2: Convert to fraction form
    61,690.80/92,535.90 = 14,943.68/x
  3. Step 3: Cross multiply
    61,690.80x = 92,535.90 × 14,943.68
  4. Step 4: Simplify right side
    61,690.80x = 1,382,826,878.11
  5. Step 5: Solve for x
    x = 1,382,826,878.11/61,690.80
  6. Step 6: Final answer
    x = 22,415.45

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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.