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Finding the Fourth Proportional to 153,397.41, 211,620.11 and 89,707.11

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Solution

The fourth proportional to 153,397.41, 211,620.11 and 89,707.11 is: 123,755.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,397.41 : 211,620.11 = 89,707.11 : x
  2. Step 2: Convert to fraction form
    153,397.41/211,620.11 = 89,707.11/x
  3. Step 3: Cross multiply
    153,397.41x = 211,620.11 × 89,707.11
  4. Step 4: Simplify right side
    153,397.41x = 18,983,828,037.45
  5. Step 5: Solve for x
    x = 18,983,828,037.45/153,397.41
  6. Step 6: Final answer
    x = 123,755.86

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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.