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Finding the Fourth Proportional to 124,409.50, 171,685.16 and 70,694.58

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Solution

The fourth proportional to 124,409.50, 171,685.16 and 70,694.58 is: 97,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,409.50 : 171,685.16 = 70,694.58 : x
  2. Step 2: Convert to fraction form
    124,409.50/171,685.16 = 70,694.58/x
  3. Step 3: Cross multiply
    124,409.50x = 171,685.16 × 70,694.58
  4. Step 4: Simplify right side
    124,409.50x = 12,137,210,278.43
  5. Step 5: Solve for x
    x = 12,137,210,278.43/124,409.50
  6. Step 6: Final answer
    x = 97,558.55

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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.