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Finding the Fourth Proportional to 4,507.76, 6,220.76 and 2,518.40

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Solution

The fourth proportional to 4,507.76, 6,220.76 and 2,518.40 is: 3,475.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,507.76 : 6,220.76 = 2,518.40 : x
  2. Step 2: Convert to fraction form
    4,507.76/6,220.76 = 2,518.40/x
  3. Step 3: Cross multiply
    4,507.76x = 6,220.76 × 2,518.40
  4. Step 4: Simplify right side
    4,507.76x = 15,666,361.98
  5. Step 5: Solve for x
    x = 15,666,361.98/4,507.76
  6. Step 6: Final answer
    x = 3,475.42

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Half scale
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Double scale
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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.