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Finding the Fourth Proportional to 211,121.72, 316,703.33 and 61,363.25

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Solution

The fourth proportional to 211,121.72, 316,703.33 and 61,363.25 is: 92,050.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,121.72 : 316,703.33 = 61,363.25 : x
  2. Step 2: Convert to fraction form
    211,121.72/316,703.33 = 61,363.25/x
  3. Step 3: Cross multiply
    211,121.72x = 316,703.33 × 61,363.25
  4. Step 4: Simplify right side
    211,121.72x = 19,433,945,307.81
  5. Step 5: Solve for x
    x = 19,433,945,307.81/211,121.72
  6. Step 6: Final answer
    x = 92,050.90

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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.