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Finding the Fourth Proportional to 103,648.83, 155,464.29 and 63,111.84

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Solution

The fourth proportional to 103,648.83, 155,464.29 and 63,111.84 is: 94,662.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,648.83 : 155,464.29 = 63,111.84 : x
  2. Step 2: Convert to fraction form
    103,648.83/155,464.29 = 63,111.84/x
  3. Step 3: Cross multiply
    103,648.83x = 155,464.29 × 63,111.84
  4. Step 4: Simplify right side
    103,648.83x = 9,811,637,396.19
  5. Step 5: Solve for x
    x = 9,811,637,396.19/103,648.83
  6. Step 6: Final answer
    x = 94,662.31

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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.