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Finding the Fourth Proportional to 14,274.71, 19,698.68 and 7,901.55

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Solution

The fourth proportional to 14,274.71, 19,698.68 and 7,901.55 is: 10,903.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,274.71 : 19,698.68 = 7,901.55 : x
  2. Step 2: Convert to fraction form
    14,274.71/19,698.68 = 7,901.55/x
  3. Step 3: Cross multiply
    14,274.71x = 19,698.68 × 7,901.55
  4. Step 4: Simplify right side
    14,274.71x = 155,650,065.45
  5. Step 5: Solve for x
    x = 155,650,065.45/14,274.71
  6. Step 6: Final answer
    x = 10,903.91

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1.5x scale

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.