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Finding the Fourth Proportional to 86,188.86, 118,999.53 and 66,010.14

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Solution

The fourth proportional to 86,188.86, 118,999.53 and 66,010.14 is: 91,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,188.86 : 118,999.53 = 66,010.14 : x
  2. Step 2: Convert to fraction form
    86,188.86/118,999.53 = 66,010.14/x
  3. Step 3: Cross multiply
    86,188.86x = 118,999.53 × 66,010.14
  4. Step 4: Simplify right side
    86,188.86x = 7,855,175,635.23
  5. Step 5: Solve for x
    x = 7,855,175,635.23/86,188.86
  6. Step 6: Final answer
    x = 91,139.11

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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.