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Finding the Fourth Proportional to 361,547.40, 542,321.10 and 235,576.20

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Solution

The fourth proportional to 361,547.40, 542,321.10 and 235,576.20 is: 353,364.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,547.40 : 542,321.10 = 235,576.20 : x
  2. Step 2: Convert to fraction form
    361,547.40/542,321.10 = 235,576.20/x
  3. Step 3: Cross multiply
    361,547.40x = 542,321.10 × 235,576.20
  4. Step 4: Simplify right side
    361,547.40x = 127,757,943,917.82
  5. Step 5: Solve for x
    x = 127,757,943,917.82/361,547.40
  6. Step 6: Final answer
    x = 353,364.30

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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.