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Finding the Fourth Proportional to 99,656.86, 149,521.74 and 46,374.25

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Solution

The fourth proportional to 99,656.86, 149,521.74 and 46,374.25 is: 69,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,656.86 : 149,521.74 = 46,374.25 : x
  2. Step 2: Convert to fraction form
    99,656.86/149,521.74 = 46,374.25/x
  3. Step 3: Cross multiply
    99,656.86x = 149,521.74 × 46,374.25
  4. Step 4: Simplify right side
    99,656.86x = 6,933,958,551.20
  5. Step 5: Solve for x
    x = 6,933,958,551.20/99,656.86
  6. Step 6: Final answer
    x = 69,578.34

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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.