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Finding the Fourth Proportional to 153,562.14, 211,843.32 and 89,860.50

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Solution

The fourth proportional to 153,562.14, 211,843.32 and 89,860.50 is: 123,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,562.14 : 211,843.32 = 89,860.50 : x
  2. Step 2: Convert to fraction form
    153,562.14/211,843.32 = 89,860.50/x
  3. Step 3: Cross multiply
    153,562.14x = 211,843.32 × 89,860.50
  4. Step 4: Simplify right side
    153,562.14x = 19,036,346,656.86
  5. Step 5: Solve for x
    x = 19,036,346,656.86/153,562.14
  6. Step 6: Final answer
    x = 123,965.10

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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.