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Finding the Fourth Proportional to 80,703.76, 111,384.84 and 46,713.20

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Solution

The fourth proportional to 80,703.76, 111,384.84 and 46,713.20 is: 64,472.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,703.76 : 111,384.84 = 46,713.20 : x
  2. Step 2: Convert to fraction form
    80,703.76/111,384.84 = 46,713.20/x
  3. Step 3: Cross multiply
    80,703.76x = 111,384.84 × 46,713.20
  4. Step 4: Simplify right side
    80,703.76x = 5,203,142,307.89
  5. Step 5: Solve for x
    x = 5,203,142,307.89/80,703.76
  6. Step 6: Final answer
    x = 64,472.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.