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Finding the Fourth Proportional to 86,107.74, 118,886.66 and 77,004.86

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Solution

The fourth proportional to 86,107.74, 118,886.66 and 77,004.86 is: 106,318.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,107.74 : 118,886.66 = 77,004.86 : x
  2. Step 2: Convert to fraction form
    86,107.74/118,886.66 = 77,004.86/x
  3. Step 3: Cross multiply
    86,107.74x = 118,886.66 × 77,004.86
  4. Step 4: Simplify right side
    86,107.74x = 9,154,850,609.17
  5. Step 5: Solve for x
    x = 9,154,850,609.17/86,107.74
  6. Step 6: Final answer
    x = 106,318.56

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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.