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Finding the Fourth Proportional to 210,689.67, 316,043.74 and 60,945.10

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Solution

The fourth proportional to 210,689.67, 316,043.74 and 60,945.10 is: 91,420.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,689.67 : 316,043.74 = 60,945.10 : x
  2. Step 2: Convert to fraction form
    210,689.67/316,043.74 = 60,945.10/x
  3. Step 3: Cross multiply
    210,689.67x = 316,043.74 × 60,945.10
  4. Step 4: Simplify right side
    210,689.67x = 19,261,317,033.95
  5. Step 5: Solve for x
    x = 19,261,317,033.95/210,689.67
  6. Step 6: Final answer
    x = 91,420.32

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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.