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Finding the Fourth Proportional to 87,308.48, 120,482.48 and 53,373.80

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Solution

The fourth proportional to 87,308.48, 120,482.48 and 53,373.80 is: 73,653.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,308.48 : 120,482.48 = 53,373.80 : x
  2. Step 2: Convert to fraction form
    87,308.48/120,482.48 = 53,373.80/x
  3. Step 3: Cross multiply
    87,308.48x = 120,482.48 × 53,373.80
  4. Step 4: Simplify right side
    87,308.48x = 6,430,607,791.02
  5. Step 5: Solve for x
    x = 6,430,607,791.02/87,308.48
  6. Step 6: Final answer
    x = 73,653.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.