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Finding the Fourth Proportional to 107,598, 161,630.52 and 90,991.36

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Solution

The fourth proportional to 107,598, 161,630.52 and 90,991.36 is: 136,684.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,598 : 161,630.52 = 90,991.36 : x
  2. Step 2: Convert to fraction form
    107,598/161,630.52 = 90,991.36/x
  3. Step 3: Cross multiply
    107,598x = 161,630.52 × 90,991.36
  4. Step 4: Simplify right side
    107,598x = 14,706,980,832.31
  5. Step 5: Solve for x
    x = 14,706,980,832.31/107,598
  6. Step 6: Final answer
    x = 136,684.52

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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.