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Finding the Fourth Proportional to 86,836.48, 130,052.16 and 63,404.80

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Solution

The fourth proportional to 86,836.48, 130,052.16 and 63,404.80 is: 94,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,836.48 : 130,052.16 = 63,404.80 : x
  2. Step 2: Convert to fraction form
    86,836.48/130,052.16 = 63,404.80/x
  3. Step 3: Cross multiply
    86,836.48x = 130,052.16 × 63,404.80
  4. Step 4: Simplify right side
    86,836.48x = 8,245,931,194.37
  5. Step 5: Solve for x
    x = 8,245,931,194.37/86,836.48
  6. Step 6: Final answer
    x = 94,959.30

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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.