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Finding the Fourth Proportional to 210,926.68, 316,324.80 and 61,177.98

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Solution

The fourth proportional to 210,926.68, 316,324.80 and 61,177.98 is: 91,748.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,926.68 : 316,324.80 = 61,177.98 : x
  2. Step 2: Convert to fraction form
    210,926.68/316,324.80 = 61,177.98/x
  3. Step 3: Cross multiply
    210,926.68x = 316,324.80 × 61,177.98
  4. Step 4: Simplify right side
    210,926.68x = 19,352,112,287.90
  5. Step 5: Solve for x
    x = 19,352,112,287.90/210,926.68
  6. Step 6: Final answer
    x = 91,748.05

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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.