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Finding the Fourth Proportional to 71,283.48, 106,925.28 and 21,368.82

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Solution

The fourth proportional to 71,283.48, 106,925.28 and 21,368.82 is: 32,053.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,283.48 : 106,925.28 = 21,368.82 : x
  2. Step 2: Convert to fraction form
    71,283.48/106,925.28 = 21,368.82/x
  3. Step 3: Cross multiply
    71,283.48x = 106,925.28 × 21,368.82
  4. Step 4: Simplify right side
    71,283.48x = 2,284,867,061.77
  5. Step 5: Solve for x
    x = 2,284,867,061.77/71,283.48
  6. Step 6: Final answer
    x = 32,053.25

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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.