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Finding the Fourth Proportional to 90,361.79, 124,698.28 and 49,526.25

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Solution

The fourth proportional to 90,361.79, 124,698.28 and 49,526.25 is: 68,345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,361.79 : 124,698.28 = 49,526.25 : x
  2. Step 2: Convert to fraction form
    90,361.79/124,698.28 = 49,526.25/x
  3. Step 3: Cross multiply
    90,361.79x = 124,698.28 × 49,526.25
  4. Step 4: Simplify right side
    90,361.79x = 6,175,838,066.03
  5. Step 5: Solve for x
    x = 6,175,838,066.03/90,361.79
  6. Step 6: Final answer
    x = 68,345.68

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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.