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Finding the Fourth Proportional to 56,928.48, 85,278.48 and 52,278.06

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Solution

The fourth proportional to 56,928.48, 85,278.48 and 52,278.06 is: 78,312.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,928.48 : 85,278.48 = 52,278.06 : x
  2. Step 2: Convert to fraction form
    56,928.48/85,278.48 = 52,278.06/x
  3. Step 3: Cross multiply
    56,928.48x = 85,278.48 × 52,278.06
  4. Step 4: Simplify right side
    56,928.48x = 4,458,193,494.15
  5. Step 5: Solve for x
    x = 4,458,193,494.15/56,928.48
  6. Step 6: Final answer
    x = 78,312.18

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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.