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Finding the Fourth Proportional to 61,663.04, 85,085.87 and 36,159.78

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Solution

The fourth proportional to 61,663.04, 85,085.87 and 36,159.78 is: 49,895.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,663.04 : 85,085.87 = 36,159.78 : x
  2. Step 2: Convert to fraction form
    61,663.04/85,085.87 = 36,159.78/x
  3. Step 3: Cross multiply
    61,663.04x = 85,085.87 × 36,159.78
  4. Step 4: Simplify right side
    61,663.04x = 3,076,686,340.31
  5. Step 5: Solve for x
    x = 3,076,686,340.31/61,663.04
  6. Step 6: Final answer
    x = 49,895.15

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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.