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Finding the Fourth Proportional to 469,420.32, 647,800.19 and 254,560.32

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Solution

The fourth proportional to 469,420.32, 647,800.19 and 254,560.32 is: 351,293.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,420.32 : 647,800.19 = 254,560.32 : x
  2. Step 2: Convert to fraction form
    469,420.32/647,800.19 = 254,560.32/x
  3. Step 3: Cross multiply
    469,420.32x = 647,800.19 × 254,560.32
  4. Step 4: Simplify right side
    469,420.32x = 164,904,223,662.46
  5. Step 5: Solve for x
    x = 164,904,223,662.46/469,420.32
  6. Step 6: Final answer
    x = 351,293.32

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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.