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Finding the Fourth Proportional to 344,111.90, 515,995.05 and 156,911.90

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Solution

The fourth proportional to 344,111.90, 515,995.05 and 156,911.90 is: 235,289.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,111.90 : 515,995.05 = 156,911.90 : x
  2. Step 2: Convert to fraction form
    344,111.90/515,995.05 = 156,911.90/x
  3. Step 3: Cross multiply
    344,111.90x = 515,995.05 × 156,911.90
  4. Step 4: Simplify right side
    344,111.90x = 80,965,763,686.10
  5. Step 5: Solve for x
    x = 80,965,763,686.10/344,111.90
  6. Step 6: Final answer
    x = 235,289.05

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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.