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Finding the Fourth Proportional to 85,376.19, 117,808.28 and 47,652.03

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Solution

The fourth proportional to 85,376.19, 117,808.28 and 47,652.03 is: 65,753.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,376.19 : 117,808.28 = 47,652.03 : x
  2. Step 2: Convert to fraction form
    85,376.19/117,808.28 = 47,652.03/x
  3. Step 3: Cross multiply
    85,376.19x = 117,808.28 × 47,652.03
  4. Step 4: Simplify right side
    85,376.19x = 5,613,803,454.55
  5. Step 5: Solve for x
    x = 5,613,803,454.55/85,376.19
  6. Step 6: Final answer
    x = 65,753.74

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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.