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Finding the Fourth Proportional to 117,930.33, 176,737.85 and 42,980.02

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Solution

The fourth proportional to 117,930.33, 176,737.85 and 42,980.02 is: 64,412.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,930.33 : 176,737.85 = 42,980.02 : x
  2. Step 2: Convert to fraction form
    117,930.33/176,737.85 = 42,980.02/x
  3. Step 3: Cross multiply
    117,930.33x = 176,737.85 × 42,980.02
  4. Step 4: Simplify right side
    117,930.33x = 7,596,195,832.19
  5. Step 5: Solve for x
    x = 7,596,195,832.19/117,930.33
  6. Step 6: Final answer
    x = 64,412.57

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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.