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Finding the Fourth Proportional to 61,886.56, 92,619.60 and 38,209.20

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Solution

The fourth proportional to 61,886.56, 92,619.60 and 38,209.20 is: 57,184.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,886.56 : 92,619.60 = 38,209.20 : x
  2. Step 2: Convert to fraction form
    61,886.56/92,619.60 = 38,209.20/x
  3. Step 3: Cross multiply
    61,886.56x = 92,619.60 × 38,209.20
  4. Step 4: Simplify right side
    61,886.56x = 3,538,920,820.32
  5. Step 5: Solve for x
    x = 3,538,920,820.32/61,886.56
  6. Step 6: Final answer
    x = 57,184.00

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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.