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Finding the Fourth Proportional to 14,332.56, 19,780.62 and 8,666.64

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Solution

The fourth proportional to 14,332.56, 19,780.62 and 8,666.64 is: 11,960.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,332.56 : 19,780.62 = 8,666.64 : x
  2. Step 2: Convert to fraction form
    14,332.56/19,780.62 = 8,666.64/x
  3. Step 3: Cross multiply
    14,332.56x = 19,780.62 × 8,666.64
  4. Step 4: Simplify right side
    14,332.56x = 171,431,512.52
  5. Step 5: Solve for x
    x = 171,431,512.52/14,332.56
  6. Step 6: Final answer
    x = 11,960.98

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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.