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Finding the Fourth Proportional to 141,398.89, 211,814.35 and 65,390.89

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Solution

The fourth proportional to 141,398.89, 211,814.35 and 65,390.89 is: 97,955.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,398.89 : 211,814.35 = 65,390.89 : x
  2. Step 2: Convert to fraction form
    141,398.89/211,814.35 = 65,390.89/x
  3. Step 3: Cross multiply
    141,398.89x = 211,814.35 × 65,390.89
  4. Step 4: Simplify right side
    141,398.89x = 13,850,729,620.92
  5. Step 5: Solve for x
    x = 13,850,729,620.92/141,398.89
  6. Step 6: Final answer
    x = 97,955.01

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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.