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Finding the Fourth Proportional to 86,954.80, 119,981.80 and 51,151.92

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Solution

The fourth proportional to 86,954.80, 119,981.80 and 51,151.92 is: 70,580.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,954.80 : 119,981.80 = 51,151.92 : x
  2. Step 2: Convert to fraction form
    86,954.80/119,981.80 = 51,151.92/x
  3. Step 3: Cross multiply
    86,954.80x = 119,981.80 × 51,151.92
  4. Step 4: Simplify right side
    86,954.80x = 6,137,299,435.06
  5. Step 5: Solve for x
    x = 6,137,299,435.06/86,954.80
  6. Step 6: Final answer
    x = 70,580.34

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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.