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Finding the Fourth Proportional to 144,448.88, 216,724.64 and 64,479.60

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Solution

The fourth proportional to 144,448.88, 216,724.64 and 64,479.60 is: 96,742.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,448.88 : 216,724.64 = 64,479.60 : x
  2. Step 2: Convert to fraction form
    144,448.88/216,724.64 = 64,479.60/x
  3. Step 3: Cross multiply
    144,448.88x = 216,724.64 × 64,479.60
  4. Step 4: Simplify right side
    144,448.88x = 13,974,317,774.95
  5. Step 5: Solve for x
    x = 13,974,317,774.95/144,448.88
  6. Step 6: Final answer
    x = 96,742.31

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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.