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Finding the Fourth Proportional to 144,636.66, 216,948.64 and 39,455.28

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Solution

The fourth proportional to 144,636.66, 216,948.64 and 39,455.28 is: 59,181.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,636.66 : 216,948.64 = 39,455.28 : x
  2. Step 2: Convert to fraction form
    144,636.66/216,948.64 = 39,455.28/x
  3. Step 3: Cross multiply
    144,636.66x = 216,948.64 × 39,455.28
  4. Step 4: Simplify right side
    144,636.66x = 8,559,768,054.80
  5. Step 5: Solve for x
    x = 8,559,768,054.80/144,636.66
  6. Step 6: Final answer
    x = 59,181.18

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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.