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Finding the Fourth Proportional to 676,863.40, 933,953.07 and 386,342.32

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Solution

The fourth proportional to 676,863.40, 933,953.07 and 386,342.32 is: 533,084.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,863.40 : 933,953.07 = 386,342.32 : x
  2. Step 2: Convert to fraction form
    676,863.40/933,953.07 = 386,342.32/x
  3. Step 3: Cross multiply
    676,863.40x = 933,953.07 × 386,342.32
  4. Step 4: Simplify right side
    676,863.40x = 360,825,595,834.92
  5. Step 5: Solve for x
    x = 360,825,595,834.92/676,863.40
  6. Step 6: Final answer
    x = 533,084.81

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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.