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Finding the Fourth Proportional to 25,390.84, 35,033.70 and 15,320.92

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Solution

The fourth proportional to 25,390.84, 35,033.70 and 15,320.92 is: 21,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.84 : 35,033.70 = 15,320.92 : x
  2. Step 2: Convert to fraction form
    25,390.84/35,033.70 = 15,320.92/x
  3. Step 3: Cross multiply
    25,390.84x = 35,033.70 × 15,320.92
  4. Step 4: Simplify right side
    25,390.84x = 536,748,515.00
  5. Step 5: Solve for x
    x = 536,748,515.00/25,390.84
  6. Step 6: Final answer
    x = 21,139.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.