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Finding the Fourth Proportional to 9,709.60, 14,575.20 and 5,335.60

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Solution

The fourth proportional to 9,709.60, 14,575.20 and 5,335.60 is: 8,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,709.60 : 14,575.20 = 5,335.60 : x
  2. Step 2: Convert to fraction form
    9,709.60/14,575.20 = 5,335.60/x
  3. Step 3: Cross multiply
    9,709.60x = 14,575.20 × 5,335.60
  4. Step 4: Simplify right side
    9,709.60x = 77,767,437.12
  5. Step 5: Solve for x
    x = 77,767,437.12/9,709.60
  6. Step 6: Final answer
    x = 8,009.33

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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.