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Finding the Fourth Proportional to 86,851.71, 118,760.93 and 86,851.71

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Solution

The fourth proportional to 86,851.71, 118,760.93 and 86,851.71 is: 118,760.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,851.71 : 118,760.93 = 86,851.71 : x
  2. Step 2: Convert to fraction form
    86,851.71/118,760.93 = 86,851.71/x
  3. Step 3: Cross multiply
    86,851.71x = 118,760.93 × 86,851.71
  4. Step 4: Simplify right side
    86,851.71x = 10,314,589,743.13
  5. Step 5: Solve for x
    x = 10,314,589,743.13/86,851.71
  6. Step 6: Final answer
    x = 118,760.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.