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Finding the Fourth Proportional to 238,778.22, 358,090.11 and 78,818.22

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Solution

The fourth proportional to 238,778.22, 358,090.11 and 78,818.22 is: 118,201.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,778.22 : 358,090.11 = 78,818.22 : x
  2. Step 2: Convert to fraction form
    238,778.22/358,090.11 = 78,818.22/x
  3. Step 3: Cross multiply
    238,778.22x = 358,090.11 × 78,818.22
  4. Step 4: Simplify right side
    238,778.22x = 28,224,025,069.80
  5. Step 5: Solve for x
    x = 28,224,025,069.80/238,778.22
  6. Step 6: Final answer
    x = 118,201.84

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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.