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Finding the Fourth Proportional to 117,695.56, 176,487.88 and 42,763

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Solution

The fourth proportional to 117,695.56, 176,487.88 and 42,763 is: 64,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,695.56 : 176,487.88 = 42,763 : x
  2. Step 2: Convert to fraction form
    117,695.56/176,487.88 = 42,763/x
  3. Step 3: Cross multiply
    117,695.56x = 176,487.88 × 42,763
  4. Step 4: Simplify right side
    117,695.56x = 7,547,151,212.44
  5. Step 5: Solve for x
    x = 7,547,151,212.44/117,695.56
  6. Step 6: Final answer
    x = 64,124.35

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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.