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Finding the Fourth Proportional to 210,967.73, 316,385.52 and 61,218.36

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Solution

The fourth proportional to 210,967.73, 316,385.52 and 61,218.36 is: 91,808.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,967.73 : 316,385.52 = 61,218.36 : x
  2. Step 2: Convert to fraction form
    210,967.73/316,385.52 = 61,218.36/x
  3. Step 3: Cross multiply
    210,967.73x = 316,385.52 × 61,218.36
  4. Step 4: Simplify right side
    210,967.73x = 19,368,602,662.15
  5. Step 5: Solve for x
    x = 19,368,602,662.15/210,967.73
  6. Step 6: Final answer
    x = 91,808.37

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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.