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Finding the Fourth Proportional to 7,700.76, 10,627.88 and 4,718.60

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Solution

The fourth proportional to 7,700.76, 10,627.88 and 4,718.60 is: 6,512.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,700.76 : 10,627.88 = 4,718.60 : x
  2. Step 2: Convert to fraction form
    7,700.76/10,627.88 = 4,718.60/x
  3. Step 3: Cross multiply
    7,700.76x = 10,627.88 × 4,718.60
  4. Step 4: Simplify right side
    7,700.76x = 50,148,714.57
  5. Step 5: Solve for x
    x = 50,148,714.57/7,700.76
  6. Step 6: Final answer
    x = 6,512.18

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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.