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Finding the Fourth Proportional to 193,298.71, 289,878.54 and 66,904.63

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Solution

The fourth proportional to 193,298.71, 289,878.54 and 66,904.63 is: 100,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,298.71 : 289,878.54 = 66,904.63 : x
  2. Step 2: Convert to fraction form
    193,298.71/289,878.54 = 66,904.63/x
  3. Step 3: Cross multiply
    193,298.71x = 289,878.54 × 66,904.63
  4. Step 4: Simplify right side
    193,298.71x = 19,394,216,463.64
  5. Step 5: Solve for x
    x = 19,394,216,463.64/193,298.71
  6. Step 6: Final answer
    x = 100,332.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.