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Finding the Fourth Proportional to 156,713.65, 235,070.48 and 45,905.65

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Solution

The fourth proportional to 156,713.65, 235,070.48 and 45,905.65 is: 68,858.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,713.65 : 235,070.48 = 45,905.65 : x
  2. Step 2: Convert to fraction form
    156,713.65/235,070.48 = 45,905.65/x
  3. Step 3: Cross multiply
    156,713.65x = 235,070.48 × 45,905.65
  4. Step 4: Simplify right side
    156,713.65x = 10,791,063,180.21
  5. Step 5: Solve for x
    x = 10,791,063,180.21/156,713.65
  6. Step 6: Final answer
    x = 68,858.48

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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.