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Finding the Fourth Proportional to 236,487.40, 354,731.10 and 219,380.20

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Solution

The fourth proportional to 236,487.40, 354,731.10 and 219,380.20 is: 329,070.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,487.40 : 354,731.10 = 219,380.20 : x
  2. Step 2: Convert to fraction form
    236,487.40/354,731.10 = 219,380.20/x
  3. Step 3: Cross multiply
    236,487.40x = 354,731.10 × 219,380.20
  4. Step 4: Simplify right side
    236,487.40x = 77,820,979,664.22
  5. Step 5: Solve for x
    x = 77,820,979,664.22/236,487.40
  6. Step 6: Final answer
    x = 329,070.30

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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.