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Finding the Fourth Proportional to 113,397.84, 169,985.79 and 42,268.50

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Solution

The fourth proportional to 113,397.84, 169,985.79 and 42,268.50 is: 63,361.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,397.84 : 169,985.79 = 42,268.50 : x
  2. Step 2: Convert to fraction form
    113,397.84/169,985.79 = 42,268.50/x
  3. Step 3: Cross multiply
    113,397.84x = 169,985.79 × 42,268.50
  4. Step 4: Simplify right side
    113,397.84x = 7,185,044,364.62
  5. Step 5: Solve for x
    x = 7,185,044,364.62/113,397.84
  6. Step 6: Final answer
    x = 63,361.39

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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.