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Finding the Fourth Proportional to 210,767.16, 316,167.25 and 61,009.71

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Solution

The fourth proportional to 210,767.16, 316,167.25 and 61,009.71 is: 91,519.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,767.16 : 316,167.25 = 61,009.71 : x
  2. Step 2: Convert to fraction form
    210,767.16/316,167.25 = 61,009.71/x
  3. Step 3: Cross multiply
    210,767.16x = 316,167.25 × 61,009.71
  4. Step 4: Simplify right side
    210,767.16x = 19,289,272,234.00
  5. Step 5: Solve for x
    x = 19,289,272,234.00/210,767.16
  6. Step 6: Final answer
    x = 91,519.34

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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.