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Finding the Fourth Proportional to 86,165.76, 118,765.44 and 59,262.72

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Solution

The fourth proportional to 86,165.76, 118,765.44 and 59,262.72 is: 81,683.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,165.76 : 118,765.44 = 59,262.72 : x
  2. Step 2: Convert to fraction form
    86,165.76/118,765.44 = 59,262.72/x
  3. Step 3: Cross multiply
    86,165.76x = 118,765.44 × 59,262.72
  4. Step 4: Simplify right side
    86,165.76x = 7,038,363,016.40
  5. Step 5: Solve for x
    x = 7,038,363,016.40/86,165.76
  6. Step 6: Final answer
    x = 81,683.99

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1.5x scale

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.