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Finding the Fourth Proportional to 14,967.65, 20,655.84 and 8,253.51

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Solution

The fourth proportional to 14,967.65, 20,655.84 and 8,253.51 is: 11,390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,967.65 : 20,655.84 = 8,253.51 : x
  2. Step 2: Convert to fraction form
    14,967.65/20,655.84 = 8,253.51/x
  3. Step 3: Cross multiply
    14,967.65x = 20,655.84 × 8,253.51
  4. Step 4: Simplify right side
    14,967.65x = 170,483,182.00
  5. Step 5: Solve for x
    x = 170,483,182.00/14,967.65
  6. Step 6: Final answer
    x = 11,390.11

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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.