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Finding the Fourth Proportional to 86,752.64, 130,040.34 and 49,233.50

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Solution

The fourth proportional to 86,752.64, 130,040.34 and 49,233.50 is: 73,799.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,752.64 : 130,040.34 = 49,233.50 : x
  2. Step 2: Convert to fraction form
    86,752.64/130,040.34 = 49,233.50/x
  3. Step 3: Cross multiply
    86,752.64x = 130,040.34 × 49,233.50
  4. Step 4: Simplify right side
    86,752.64x = 6,402,341,079.39
  5. Step 5: Solve for x
    x = 6,402,341,079.39/86,752.64
  6. Step 6: Final answer
    x = 73,799.96

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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.