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Finding the Fourth Proportional to 7,695.60, 11,543.40 and 4,196.40

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Solution

The fourth proportional to 7,695.60, 11,543.40 and 4,196.40 is: 6,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,695.60 : 11,543.40 = 4,196.40 : x
  2. Step 2: Convert to fraction form
    7,695.60/11,543.40 = 4,196.40/x
  3. Step 3: Cross multiply
    7,695.60x = 11,543.40 × 4,196.40
  4. Step 4: Simplify right side
    7,695.60x = 48,440,723.76
  5. Step 5: Solve for x
    x = 48,440,723.76/7,695.60
  6. Step 6: Final answer
    x = 6,294.60

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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.