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Finding the Fourth Proportional to 69,248.44, 103,886.64 and 21,870.92

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Solution

The fourth proportional to 69,248.44, 103,886.64 and 21,870.92 is: 32,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,248.44 : 103,886.64 = 21,870.92 : x
  2. Step 2: Convert to fraction form
    69,248.44/103,886.64 = 21,870.92/x
  3. Step 3: Cross multiply
    69,248.44x = 103,886.64 × 21,870.92
  4. Step 4: Simplify right side
    69,248.44x = 2,272,096,392.51
  5. Step 5: Solve for x
    x = 2,272,096,392.51/69,248.44
  6. Step 6: Final answer
    x = 32,810.80

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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.