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Finding the Fourth Proportional to 124,403.64, 171,673.59 and 67,815.01

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Solution

The fourth proportional to 124,403.64, 171,673.59 and 67,815.01 is: 93,582.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,403.64 : 171,673.59 = 67,815.01 : x
  2. Step 2: Convert to fraction form
    124,403.64/171,673.59 = 67,815.01/x
  3. Step 3: Cross multiply
    124,403.64x = 171,673.59 × 67,815.01
  4. Step 4: Simplify right side
    124,403.64x = 11,642,046,222.59
  5. Step 5: Solve for x
    x = 11,642,046,222.59/124,403.64
  6. Step 6: Final answer
    x = 93,582.84

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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.