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Finding the Fourth Proportional to 152,615.97, 210,538.98 and 98,918.37

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Solution

The fourth proportional to 152,615.97, 210,538.98 and 98,918.37 is: 136,461.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,615.97 : 210,538.98 = 98,918.37 : x
  2. Step 2: Convert to fraction form
    152,615.97/210,538.98 = 98,918.37/x
  3. Step 3: Cross multiply
    152,615.97x = 210,538.98 × 98,918.37
  4. Step 4: Simplify right side
    152,615.97x = 20,826,172,723.06
  5. Step 5: Solve for x
    x = 20,826,172,723.06/152,615.97
  6. Step 6: Final answer
    x = 136,461.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.