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Finding the Fourth Proportional to 368,536.25, 552,802.54 and 143,919.51

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Solution

The fourth proportional to 368,536.25, 552,802.54 and 143,919.51 is: 215,878.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,536.25 : 552,802.54 = 143,919.51 : x
  2. Step 2: Convert to fraction form
    368,536.25/552,802.54 = 143,919.51/x
  3. Step 3: Cross multiply
    368,536.25x = 552,802.54 × 143,919.51
  4. Step 4: Simplify right side
    368,536.25x = 79,559,070,683.56
  5. Step 5: Solve for x
    x = 79,559,070,683.56/368,536.25
  6. Step 6: Final answer
    x = 215,878.55

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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.