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Finding the Fourth Proportional to 76,631.06, 115,666.36 and 76,631.06

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Solution

The fourth proportional to 76,631.06, 115,666.36 and 76,631.06 is: 115,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,631.06 : 115,666.36 = 76,631.06 : x
  2. Step 2: Convert to fraction form
    76,631.06/115,666.36 = 76,631.06/x
  3. Step 3: Cross multiply
    76,631.06x = 115,666.36 × 76,631.06
  4. Step 4: Simplify right side
    76,631.06x = 8,863,635,870.73
  5. Step 5: Solve for x
    x = 8,863,635,870.73/76,631.06
  6. Step 6: Final answer
    x = 115,666.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.