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Finding the Fourth Proportional to 124,528, 171,848.64 and 67,940.60

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Solution

The fourth proportional to 124,528, 171,848.64 and 67,940.60 is: 93,758.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,528 : 171,848.64 = 67,940.60 : x
  2. Step 2: Convert to fraction form
    124,528/171,848.64 = 67,940.60/x
  3. Step 3: Cross multiply
    124,528x = 171,848.64 × 67,940.60
  4. Step 4: Simplify right side
    124,528x = 11,675,499,710.78
  5. Step 5: Solve for x
    x = 11,675,499,710.78/124,528
  6. Step 6: Final answer
    x = 93,758.03

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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.