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Finding the Fourth Proportional to 108,657.64, 162,898.71 and 42,063.76

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Solution

The fourth proportional to 108,657.64, 162,898.71 and 42,063.76 is: 63,061.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,657.64 : 162,898.71 = 42,063.76 : x
  2. Step 2: Convert to fraction form
    108,657.64/162,898.71 = 42,063.76/x
  3. Step 3: Cross multiply
    108,657.64x = 162,898.71 × 42,063.76
  4. Step 4: Simplify right side
    108,657.64x = 6,852,132,241.75
  5. Step 5: Solve for x
    x = 6,852,132,241.75/108,657.64
  6. Step 6: Final answer
    x = 63,061.67

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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.