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Finding the Fourth Proportional to 117,279.18, 175,963.05 and 70,564.86

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Solution

The fourth proportional to 117,279.18, 175,963.05 and 70,564.86 is: 105,873.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,279.18 : 175,963.05 = 70,564.86 : x
  2. Step 2: Convert to fraction form
    117,279.18/175,963.05 = 70,564.86/x
  3. Step 3: Cross multiply
    117,279.18x = 175,963.05 × 70,564.86
  4. Step 4: Simplify right side
    117,279.18x = 12,416,807,988.42
  5. Step 5: Solve for x
    x = 12,416,807,988.42/117,279.18
  6. Step 6: Final answer
    x = 105,873.93

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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.