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Finding the Fourth Proportional to 117,700.70, 176,551.05 and 42,905.30

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Solution

The fourth proportional to 117,700.70, 176,551.05 and 42,905.30 is: 64,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,700.70 : 176,551.05 = 42,905.30 : x
  2. Step 2: Convert to fraction form
    117,700.70/176,551.05 = 42,905.30/x
  3. Step 3: Cross multiply
    117,700.70x = 176,551.05 × 42,905.30
  4. Step 4: Simplify right side
    117,700.70x = 7,574,975,765.57
  5. Step 5: Solve for x
    x = 7,574,975,765.57/117,700.70
  6. Step 6: Final answer
    x = 64,357.95

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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.