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Finding the Fourth Proportional to 351,844.40, 527,766.60 and 85,602.80

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Solution

The fourth proportional to 351,844.40, 527,766.60 and 85,602.80 is: 128,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,844.40 : 527,766.60 = 85,602.80 : x
  2. Step 2: Convert to fraction form
    351,844.40/527,766.60 = 85,602.80/x
  3. Step 3: Cross multiply
    351,844.40x = 527,766.60 × 85,602.80
  4. Step 4: Simplify right side
    351,844.40x = 45,178,298,706.48
  5. Step 5: Solve for x
    x = 45,178,298,706.48/351,844.40
  6. Step 6: Final answer
    x = 128,404.20

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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.