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Finding the Fourth Proportional to 117,859.54, 176,771.76 and 38,974.18

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Solution

The fourth proportional to 117,859.54, 176,771.76 and 38,974.18 is: 58,455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,859.54 : 176,771.76 = 38,974.18 : x
  2. Step 2: Convert to fraction form
    117,859.54/176,771.76 = 38,974.18/x
  3. Step 3: Cross multiply
    117,859.54x = 176,771.76 × 38,974.18
  4. Step 4: Simplify right side
    117,859.54x = 6,889,534,393.16
  5. Step 5: Solve for x
    x = 6,889,534,393.16/117,859.54
  6. Step 6: Final answer
    x = 58,455.47

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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.