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Finding the Fourth Proportional to 124,361.62, 171,570.31 and 76,531.93

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Solution

The fourth proportional to 124,361.62, 171,570.31 and 76,531.93 is: 105,584.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,361.62 : 171,570.31 = 76,531.93 : x
  2. Step 2: Convert to fraction form
    124,361.62/171,570.31 = 76,531.93/x
  3. Step 3: Cross multiply
    124,361.62x = 171,570.31 × 76,531.93
  4. Step 4: Simplify right side
    124,361.62x = 13,130,606,955.00
  5. Step 5: Solve for x
    x = 13,130,606,955.00/124,361.62
  6. Step 6: Final answer
    x = 105,584.08

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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.