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Finding the Fourth Proportional to 7,795.48, 11,688.48 and 3,116.20

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Solution

The fourth proportional to 7,795.48, 11,688.48 and 3,116.20 is: 4,672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,795.48 : 11,688.48 = 3,116.20 : x
  2. Step 2: Convert to fraction form
    7,795.48/11,688.48 = 3,116.20/x
  3. Step 3: Cross multiply
    7,795.48x = 11,688.48 × 3,116.20
  4. Step 4: Simplify right side
    7,795.48x = 36,423,641.38
  5. Step 5: Solve for x
    x = 36,423,641.38/7,795.48
  6. Step 6: Final answer
    x = 4,672.41

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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.