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Finding the Fourth Proportional to 124,391.19, 171,659.90 and 70,676.28

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Solution

The fourth proportional to 124,391.19, 171,659.90 and 70,676.28 is: 97,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,391.19 : 171,659.90 = 70,676.28 : x
  2. Step 2: Convert to fraction form
    124,391.19/171,659.90 = 70,676.28/x
  3. Step 3: Cross multiply
    124,391.19x = 171,659.90 × 70,676.28
  4. Step 4: Simplify right side
    124,391.19x = 12,132,282,803.79
  5. Step 5: Solve for x
    x = 12,132,282,803.79/124,391.19
  6. Step 6: Final answer
    x = 97,533.30

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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.