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Finding the Fourth Proportional to 117,855.54, 176,765.76 and 38,970.18

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Solution

The fourth proportional to 117,855.54, 176,765.76 and 38,970.18 is: 58,449.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,855.54 : 176,765.76 = 38,970.18 : x
  2. Step 2: Convert to fraction form
    117,855.54/176,765.76 = 38,970.18/x
  3. Step 3: Cross multiply
    117,855.54x = 176,765.76 × 38,970.18
  4. Step 4: Simplify right side
    117,855.54x = 6,888,593,485.04
  5. Step 5: Solve for x
    x = 6,888,593,485.04/117,855.54
  6. Step 6: Final answer
    x = 58,449.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.