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Finding the Fourth Proportional to 86,105.73, 118,883.90 and 77,002.86

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Solution

The fourth proportional to 86,105.73, 118,883.90 and 77,002.86 is: 106,315.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,105.73 : 118,883.90 = 77,002.86 : x
  2. Step 2: Convert to fraction form
    86,105.73/118,883.90 = 77,002.86/x
  3. Step 3: Cross multiply
    86,105.73x = 118,883.90 × 77,002.86
  4. Step 4: Simplify right side
    86,105.73x = 9,154,400,307.95
  5. Step 5: Solve for x
    x = 9,154,400,307.95/86,105.73
  6. Step 6: Final answer
    x = 106,315.81

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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.