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Finding the Fourth Proportional to 124,622.32, 171,979.32 and 68,038.96

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Solution

The fourth proportional to 124,622.32, 171,979.32 and 68,038.96 is: 93,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,622.32 : 171,979.32 = 68,038.96 : x
  2. Step 2: Convert to fraction form
    124,622.32/171,979.32 = 68,038.96/x
  3. Step 3: Cross multiply
    124,622.32x = 171,979.32 × 68,038.96
  4. Step 4: Simplify right side
    124,622.32x = 11,701,294,074.31
  5. Step 5: Solve for x
    x = 11,701,294,074.31/124,622.32
  6. Step 6: Final answer
    x = 93,894.05

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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.