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Finding the Fourth Proportional to 103,732.40, 155,598.60 and 28,852.40

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Solution

The fourth proportional to 103,732.40, 155,598.60 and 28,852.40 is: 43,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,732.40 : 155,598.60 = 28,852.40 : x
  2. Step 2: Convert to fraction form
    103,732.40/155,598.60 = 28,852.40/x
  3. Step 3: Cross multiply
    103,732.40x = 155,598.60 × 28,852.40
  4. Step 4: Simplify right side
    103,732.40x = 4,489,393,046.64
  5. Step 5: Solve for x
    x = 4,489,393,046.64/103,732.40
  6. Step 6: Final answer
    x = 43,278.60

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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.