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Finding the Fourth Proportional to 79,673.80, 119,543.10 and 32,931.40

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Solution

The fourth proportional to 79,673.80, 119,543.10 and 32,931.40 is: 49,410.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,673.80 : 119,543.10 = 32,931.40 : x
  2. Step 2: Convert to fraction form
    79,673.80/119,543.10 = 32,931.40/x
  3. Step 3: Cross multiply
    79,673.80x = 119,543.10 × 32,931.40
  4. Step 4: Simplify right side
    79,673.80x = 3,936,721,643.34
  5. Step 5: Solve for x
    x = 3,936,721,643.34/79,673.80
  6. Step 6: Final answer
    x = 49,410.49

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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.