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Finding the Fourth Proportional to 12,248.88, 16,903.80 and 7,213.44

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Solution

The fourth proportional to 12,248.88, 16,903.80 and 7,213.44 is: 9,954.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248.88 : 16,903.80 = 7,213.44 : x
  2. Step 2: Convert to fraction form
    12,248.88/16,903.80 = 7,213.44/x
  3. Step 3: Cross multiply
    12,248.88x = 16,903.80 × 7,213.44
  4. Step 4: Simplify right side
    12,248.88x = 121,934,547.07
  5. Step 5: Solve for x
    x = 121,934,547.07/12,248.88
  6. Step 6: Final answer
    x = 9,954.75

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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.