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Finding the Fourth Proportional to 14,439.78, 19,924.65 and 8,152.02

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Solution

The fourth proportional to 14,439.78, 19,924.65 and 8,152.02 is: 11,248.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,439.78 : 19,924.65 = 8,152.02 : x
  2. Step 2: Convert to fraction form
    14,439.78/19,924.65 = 8,152.02/x
  3. Step 3: Cross multiply
    14,439.78x = 19,924.65 × 8,152.02
  4. Step 4: Simplify right side
    14,439.78x = 162,426,145.29
  5. Step 5: Solve for x
    x = 162,426,145.29/14,439.78
  6. Step 6: Final answer
    x = 11,248.52

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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.