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Finding the Fourth Proportional to 7,768.71, 10,714.88 and 4,783.46

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Solution

The fourth proportional to 7,768.71, 10,714.88 and 4,783.46 is: 6,597.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.71 : 10,714.88 = 4,783.46 : x
  2. Step 2: Convert to fraction form
    7,768.71/10,714.88 = 4,783.46/x
  3. Step 3: Cross multiply
    7,768.71x = 10,714.88 × 4,783.46
  4. Step 4: Simplify right side
    7,768.71x = 51,254,158.27
  5. Step 5: Solve for x
    x = 51,254,158.27/7,768.71
  6. Step 6: Final answer
    x = 6,597.51

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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.