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Finding the Fourth Proportional to 5,320.76, 7,356.72 and 4,664.60

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Solution

The fourth proportional to 5,320.76, 7,356.72 and 4,664.60 is: 6,449.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.76 : 7,356.72 = 4,664.60 : x
  2. Step 2: Convert to fraction form
    5,320.76/7,356.72 = 4,664.60/x
  3. Step 3: Cross multiply
    5,320.76x = 7,356.72 × 4,664.60
  4. Step 4: Simplify right side
    5,320.76x = 34,316,156.11
  5. Step 5: Solve for x
    x = 34,316,156.11/5,320.76
  6. Step 6: Final answer
    x = 6,449.48

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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.