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Finding the Fourth Proportional to 15,894.50, 21,933.38 and 9,925.81

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Solution

The fourth proportional to 15,894.50, 21,933.38 and 9,925.81 is: 13,696.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,894.50 : 21,933.38 = 9,925.81 : x
  2. Step 2: Convert to fraction form
    15,894.50/21,933.38 = 9,925.81/x
  3. Step 3: Cross multiply
    15,894.50x = 21,933.38 × 9,925.81
  4. Step 4: Simplify right side
    15,894.50x = 217,706,532.52
  5. Step 5: Solve for x
    x = 217,706,532.52/15,894.50
  6. Step 6: Final answer
    x = 13,696.98

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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.