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Finding the Fourth Proportional to 48,368.80, 72,553.20 and 13,308.40

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Solution

The fourth proportional to 48,368.80, 72,553.20 and 13,308.40 is: 19,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,368.80 : 72,553.20 = 13,308.40 : x
  2. Step 2: Convert to fraction form
    48,368.80/72,553.20 = 13,308.40/x
  3. Step 3: Cross multiply
    48,368.80x = 72,553.20 × 13,308.40
  4. Step 4: Simplify right side
    48,368.80x = 965,567,006.88
  5. Step 5: Solve for x
    x = 965,567,006.88/48,368.80
  6. Step 6: Final answer
    x = 19,962.60

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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.