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Finding the Fourth Proportional to 627,309.76, 940,983.12 and 153,995.12

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Solution

The fourth proportional to 627,309.76, 940,983.12 and 153,995.12 is: 230,997.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,309.76 : 940,983.12 = 153,995.12 : x
  2. Step 2: Convert to fraction form
    627,309.76/940,983.12 = 153,995.12/x
  3. Step 3: Cross multiply
    627,309.76x = 940,983.12 × 153,995.12
  4. Step 4: Simplify right side
    627,309.76x = 144,906,808,482.37
  5. Step 5: Solve for x
    x = 144,906,808,482.37/627,309.76
  6. Step 6: Final answer
    x = 230,997.22

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.