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Finding the Fourth Proportional to 620,333.60, 930,500.40 and 171,123.80

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Solution

The fourth proportional to 620,333.60, 930,500.40 and 171,123.80 is: 256,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,333.60 : 930,500.40 = 171,123.80 : x
  2. Step 2: Convert to fraction form
    620,333.60/930,500.40 = 171,123.80/x
  3. Step 3: Cross multiply
    620,333.60x = 930,500.40 × 171,123.80
  4. Step 4: Simplify right side
    620,333.60x = 159,230,764,349.52
  5. Step 5: Solve for x
    x = 159,230,764,349.52/620,333.60
  6. Step 6: Final answer
    x = 256,685.70

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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.