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Finding the Fourth Proportional to 110,395.96, 152,345.99 and 61,991.16

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Solution

The fourth proportional to 110,395.96, 152,345.99 and 61,991.16 is: 85,547.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,395.96 : 152,345.99 = 61,991.16 : x
  2. Step 2: Convert to fraction form
    110,395.96/152,345.99 = 61,991.16/x
  3. Step 3: Cross multiply
    110,395.96x = 152,345.99 × 61,991.16
  4. Step 4: Simplify right side
    110,395.96x = 9,444,104,796.43
  5. Step 5: Solve for x
    x = 9,444,104,796.43/110,395.96
  6. Step 6: Final answer
    x = 85,547.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.