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Finding the Fourth Proportional to 435,637.80, 653,456.70 and 286,338.60

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Solution

The fourth proportional to 435,637.80, 653,456.70 and 286,338.60 is: 429,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,637.80 : 653,456.70 = 286,338.60 : x
  2. Step 2: Convert to fraction form
    435,637.80/653,456.70 = 286,338.60/x
  3. Step 3: Cross multiply
    435,637.80x = 653,456.70 × 286,338.60
  4. Step 4: Simplify right side
    435,637.80x = 187,109,876,638.62
  5. Step 5: Solve for x
    x = 187,109,876,638.62/435,637.80
  6. Step 6: Final answer
    x = 429,507.90

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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.