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Finding the Fourth Proportional to 7,446.88, 10,276.76 and 4,089.76

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Solution

The fourth proportional to 7,446.88, 10,276.76 and 4,089.76 is: 5,643.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,446.88 : 10,276.76 = 4,089.76 : x
  2. Step 2: Convert to fraction form
    7,446.88/10,276.76 = 4,089.76/x
  3. Step 3: Cross multiply
    7,446.88x = 10,276.76 × 4,089.76
  4. Step 4: Simplify right side
    7,446.88x = 42,029,512.74
  5. Step 5: Solve for x
    x = 42,029,512.74/7,446.88
  6. Step 6: Final answer
    x = 5,643.91

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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.