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Finding the Fourth Proportional to 643,598.87, 965,366.93 and 238,869.86

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Solution

The fourth proportional to 643,598.87, 965,366.93 and 238,869.86 is: 358,293.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,598.87 : 965,366.93 = 238,869.86 : x
  2. Step 2: Convert to fraction form
    643,598.87/965,366.93 = 238,869.86/x
  3. Step 3: Cross multiply
    643,598.87x = 965,366.93 × 238,869.86
  4. Step 4: Simplify right side
    643,598.87x = 230,597,059,188.07
  5. Step 5: Solve for x
    x = 230,597,059,188.07/643,598.87
  6. Step 6: Final answer
    x = 358,293.14

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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.