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Finding the Fourth Proportional to 153,486.82, 211,755.63 and 93,013.84

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Solution

The fourth proportional to 153,486.82, 211,755.63 and 93,013.84 is: 128,325.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,486.82 : 211,755.63 = 93,013.84 : x
  2. Step 2: Convert to fraction form
    153,486.82/211,755.63 = 93,013.84/x
  3. Step 3: Cross multiply
    153,486.82x = 211,755.63 × 93,013.84
  4. Step 4: Simplify right side
    153,486.82x = 19,696,204,287.92
  5. Step 5: Solve for x
    x = 19,696,204,287.92/153,486.82
  6. Step 6: Final answer
    x = 128,325.05

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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.