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Finding the Fourth Proportional to 9,892.82, 13,655.14 and 5,703.86

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Solution

The fourth proportional to 9,892.82, 13,655.14 and 5,703.86 is: 7,873.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,892.82 : 13,655.14 = 5,703.86 : x
  2. Step 2: Convert to fraction form
    9,892.82/13,655.14 = 5,703.86/x
  3. Step 3: Cross multiply
    9,892.82x = 13,655.14 × 5,703.86
  4. Step 4: Simplify right side
    9,892.82x = 77,887,006.84
  5. Step 5: Solve for x
    x = 77,887,006.84/9,892.82
  6. Step 6: Final answer
    x = 7,873.08

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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.