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Finding the Fourth Proportional to 286,957.20, 430,435.80 and 236,218.80

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Solution

The fourth proportional to 286,957.20, 430,435.80 and 236,218.80 is: 354,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,957.20 : 430,435.80 = 236,218.80 : x
  2. Step 2: Convert to fraction form
    286,957.20/430,435.80 = 236,218.80/x
  3. Step 3: Cross multiply
    286,957.20x = 430,435.80 × 236,218.80
  4. Step 4: Simplify right side
    286,957.20x = 101,677,028,153.04
  5. Step 5: Solve for x
    x = 101,677,028,153.04/286,957.20
  6. Step 6: Final answer
    x = 354,328.20

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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.