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Finding the Fourth Proportional to 191,170.56, 286,510.53 and 78,929.67

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Solution

The fourth proportional to 191,170.56, 286,510.53 and 78,929.67 is: 118,293.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,170.56 : 286,510.53 = 78,929.67 : x
  2. Step 2: Convert to fraction form
    191,170.56/286,510.53 = 78,929.67/x
  3. Step 3: Cross multiply
    191,170.56x = 286,510.53 × 78,929.67
  4. Step 4: Simplify right side
    191,170.56x = 22,614,181,584.43
  5. Step 5: Solve for x
    x = 22,614,181,584.43/191,170.56
  6. Step 6: Final answer
    x = 118,293.22

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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.