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Finding the Fourth Proportional to 74,888, 103,345.44 and 48,392

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Solution

The fourth proportional to 74,888, 103,345.44 and 48,392 is: 66,780.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,888 : 103,345.44 = 48,392 : x
  2. Step 2: Convert to fraction form
    74,888/103,345.44 = 48,392/x
  3. Step 3: Cross multiply
    74,888x = 103,345.44 × 48,392
  4. Step 4: Simplify right side
    74,888x = 5,001,092,532.48
  5. Step 5: Solve for x
    x = 5,001,092,532.48/74,888
  6. Step 6: Final answer
    x = 66,780.96

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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.