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Finding the Fourth Proportional to 4,901.40, 6,621.75 and 4,901.40

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Solution

The fourth proportional to 4,901.40, 6,621.75 and 4,901.40 is: 6,621.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,901.40 : 6,621.75 = 4,901.40 : x
  2. Step 2: Convert to fraction form
    4,901.40/6,621.75 = 4,901.40/x
  3. Step 3: Cross multiply
    4,901.40x = 6,621.75 × 4,901.40
  4. Step 4: Simplify right side
    4,901.40x = 32,455,845.45
  5. Step 5: Solve for x
    x = 32,455,845.45/4,901.40
  6. Step 6: Final answer
    x = 6,621.75

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.