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Finding the Fourth Proportional to 393,365.06, 542,929.74 and 250,097.12

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Solution

The fourth proportional to 393,365.06, 542,929.74 and 250,097.12 is: 345,188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,365.06 : 542,929.74 = 250,097.12 : x
  2. Step 2: Convert to fraction form
    393,365.06/542,929.74 = 250,097.12/x
  3. Step 3: Cross multiply
    393,365.06x = 542,929.74 × 250,097.12
  4. Step 4: Simplify right side
    393,365.06x = 135,785,164,336.35
  5. Step 5: Solve for x
    x = 135,785,164,336.35/393,365.06
  6. Step 6: Final answer
    x = 345,188.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.