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Finding the Fourth Proportional to 48,657, 72,975.78 and 13,596.96

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Solution

The fourth proportional to 48,657, 72,975.78 and 13,596.96 is: 20,392.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,657 : 72,975.78 = 13,596.96 : x
  2. Step 2: Convert to fraction form
    48,657/72,975.78 = 13,596.96/x
  3. Step 3: Cross multiply
    48,657x = 72,975.78 × 13,596.96
  4. Step 4: Simplify right side
    48,657x = 992,248,693.64
  5. Step 5: Solve for x
    x = 992,248,693.64/48,657
  6. Step 6: Final answer
    x = 20,392.72

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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.