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Finding the Fourth Proportional to 61,479.12, 84,751.84 and 52,944.32

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Solution

The fourth proportional to 61,479.12, 84,751.84 and 52,944.32 is: 72,986.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,479.12 : 84,751.84 = 52,944.32 : x
  2. Step 2: Convert to fraction form
    61,479.12/84,751.84 = 52,944.32/x
  3. Step 3: Cross multiply
    61,479.12x = 84,751.84 × 52,944.32
  4. Step 4: Simplify right side
    61,479.12x = 4,487,128,537.55
  5. Step 5: Solve for x
    x = 4,487,128,537.55/61,479.12
  6. Step 6: Final answer
    x = 72,986.22

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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.