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Finding the Fourth Proportional to 289,775.94, 399,901.17 and 168,897.75

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Solution

The fourth proportional to 289,775.94, 399,901.17 and 168,897.75 is: 233,084.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,775.94 : 399,901.17 = 168,897.75 : x
  2. Step 2: Convert to fraction form
    289,775.94/399,901.17 = 168,897.75/x
  3. Step 3: Cross multiply
    289,775.94x = 399,901.17 × 168,897.75
  4. Step 4: Simplify right side
    289,775.94x = 67,542,407,835.37
  5. Step 5: Solve for x
    x = 67,542,407,835.37/289,775.94
  6. Step 6: Final answer
    x = 233,084.94

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1.5x scale

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.