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Finding the Fourth Proportional to 266,615.01, 399,657.65 and 108,956.61

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Solution

The fourth proportional to 266,615.01, 399,657.65 and 108,956.61 is: 163,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,615.01 : 399,657.65 = 108,956.61 : x
  2. Step 2: Convert to fraction form
    266,615.01/399,657.65 = 108,956.61/x
  3. Step 3: Cross multiply
    266,615.01x = 399,657.65 × 108,956.61
  4. Step 4: Simplify right side
    266,615.01x = 43,545,342,159.78
  5. Step 5: Solve for x
    x = 43,545,342,159.78/266,615.01
  6. Step 6: Final answer
    x = 163,326.67

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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.