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Finding the Fourth Proportional to 10,666.08, 15,999 and 4,818.60

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Solution

The fourth proportional to 10,666.08, 15,999 and 4,818.60 is: 7,227.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.08 : 15,999 = 4,818.60 : x
  2. Step 2: Convert to fraction form
    10,666.08/15,999 = 4,818.60/x
  3. Step 3: Cross multiply
    10,666.08x = 15,999 × 4,818.60
  4. Step 4: Simplify right side
    10,666.08x = 77,092,781.40
  5. Step 5: Solve for x
    x = 77,092,781.40/10,666.08
  6. Step 6: Final answer
    x = 7,227.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.