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Finding the Fourth Proportional to 567,209.90, 851,142.90 and 212,259.80

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Solution

The fourth proportional to 567,209.90, 851,142.90 and 212,259.80 is: 318,512.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,209.90 : 851,142.90 = 212,259.80 : x
  2. Step 2: Convert to fraction form
    567,209.90/851,142.90 = 212,259.80/x
  3. Step 3: Cross multiply
    567,209.90x = 851,142.90 × 212,259.80
  4. Step 4: Simplify right side
    567,209.90x = 180,663,421,725.42
  5. Step 5: Solve for x
    x = 180,663,421,725.42/567,209.90
  6. Step 6: Final answer
    x = 318,512.46

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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.