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Finding the Fourth Proportional to 5,306.60, 7,322.74 and 2,948.60

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Solution

The fourth proportional to 5,306.60, 7,322.74 and 2,948.60 is: 4,068.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,306.60 : 7,322.74 = 2,948.60 : x
  2. Step 2: Convert to fraction form
    5,306.60/7,322.74 = 2,948.60/x
  3. Step 3: Cross multiply
    5,306.60x = 7,322.74 × 2,948.60
  4. Step 4: Simplify right side
    5,306.60x = 21,591,831.16
  5. Step 5: Solve for x
    x = 21,591,831.16/5,306.60
  6. Step 6: Final answer
    x = 4,068.86

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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.