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Finding the Fourth Proportional to 86,912.40, 119,929.20 and 48,666.63

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Solution

The fourth proportional to 86,912.40, 119,929.20 and 48,666.63 is: 67,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,912.40 : 119,929.20 = 48,666.63 : x
  2. Step 2: Convert to fraction form
    86,912.40/119,929.20 = 48,666.63/x
  3. Step 3: Cross multiply
    86,912.40x = 119,929.20 × 48,666.63
  4. Step 4: Simplify right side
    86,912.40x = 5,836,550,002.60
  5. Step 5: Solve for x
    x = 5,836,550,002.60/86,912.40
  6. Step 6: Final answer
    x = 67,154.40

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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.