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Finding the Fourth Proportional to 124,376.50, 171,639.57 and 67,788.01

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Solution

The fourth proportional to 124,376.50, 171,639.57 and 67,788.01 is: 93,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,376.50 : 171,639.57 = 67,788.01 : x
  2. Step 2: Convert to fraction form
    124,376.50/171,639.57 = 67,788.01/x
  3. Step 3: Cross multiply
    124,376.50x = 171,639.57 × 67,788.01
  4. Step 4: Simplify right side
    124,376.50x = 11,635,104,887.56
  5. Step 5: Solve for x
    x = 11,635,104,887.56/124,376.50
  6. Step 6: Final answer
    x = 93,547.45

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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.