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Finding the Fourth Proportional to 253,576.85, 349,920.59 and 138,856.91

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Solution

The fourth proportional to 253,576.85, 349,920.59 and 138,856.91 is: 191,614.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,576.85 : 349,920.59 = 138,856.91 : x
  2. Step 2: Convert to fraction form
    253,576.85/349,920.59 = 138,856.91/x
  3. Step 3: Cross multiply
    253,576.85x = 349,920.59 × 138,856.91
  4. Step 4: Simplify right side
    253,576.85x = 48,588,889,428.89
  5. Step 5: Solve for x
    x = 48,588,889,428.89/253,576.85
  6. Step 6: Final answer
    x = 191,614.06

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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.