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Finding the Fourth Proportional to 210,461.07, 315,689.28 and 60,696.48

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Solution

The fourth proportional to 210,461.07, 315,689.28 and 60,696.48 is: 91,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,461.07 : 315,689.28 = 60,696.48 : x
  2. Step 2: Convert to fraction form
    210,461.07/315,689.28 = 60,696.48/x
  3. Step 3: Cross multiply
    210,461.07x = 315,689.28 × 60,696.48
  4. Step 4: Simplify right side
    210,461.07x = 19,161,228,069.73
  5. Step 5: Solve for x
    x = 19,161,228,069.73/210,461.07
  6. Step 6: Final answer
    x = 91,044.05

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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.