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Finding the Fourth Proportional to 124,394.19, 171,664.05 and 70,679.28

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Solution

The fourth proportional to 124,394.19, 171,664.05 and 70,679.28 is: 97,537.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,394.19 : 171,664.05 = 70,679.28 : x
  2. Step 2: Convert to fraction form
    124,394.19/171,664.05 = 70,679.28/x
  3. Step 3: Cross multiply
    124,394.19x = 171,664.05 × 70,679.28
  4. Step 4: Simplify right side
    124,394.19x = 12,133,091,455.88
  5. Step 5: Solve for x
    x = 12,133,091,455.88/124,394.19
  6. Step 6: Final answer
    x = 97,537.44

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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.