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Finding the Fourth Proportional to 103,785.68, 155,663.40 and 33,654.80

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Solution

The fourth proportional to 103,785.68, 155,663.40 and 33,654.80 is: 50,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,785.68 : 155,663.40 = 33,654.80 : x
  2. Step 2: Convert to fraction form
    103,785.68/155,663.40 = 33,654.80/x
  3. Step 3: Cross multiply
    103,785.68x = 155,663.40 × 33,654.80
  4. Step 4: Simplify right side
    103,785.68x = 5,238,820,594.32
  5. Step 5: Solve for x
    x = 5,238,820,594.32/103,785.68
  6. Step 6: Final answer
    x = 50,477.30

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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.