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Finding the Fourth Proportional to 124,606.64, 171,957.72 and 68,019.20

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Solution

The fourth proportional to 124,606.64, 171,957.72 and 68,019.20 is: 93,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,606.64 : 171,957.72 = 68,019.20 : x
  2. Step 2: Convert to fraction form
    124,606.64/171,957.72 = 68,019.20/x
  3. Step 3: Cross multiply
    124,606.64x = 171,957.72 × 68,019.20
  4. Step 4: Simplify right side
    124,606.64x = 11,696,426,548.22
  5. Step 5: Solve for x
    x = 11,696,426,548.22/124,606.64
  6. Step 6: Final answer
    x = 93,866.80

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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.