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Finding the Fourth Proportional to 694,419.84, 957,981.60 and 407,934.72

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Solution

The fourth proportional to 694,419.84, 957,981.60 and 407,934.72 is: 562,763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,419.84 : 957,981.60 = 407,934.72 : x
  2. Step 2: Convert to fraction form
    694,419.84/957,981.60 = 407,934.72/x
  3. Step 3: Cross multiply
    694,419.84x = 957,981.60 × 407,934.72
  4. Step 4: Simplify right side
    694,419.84x = 390,793,955,761.15
  5. Step 5: Solve for x
    x = 390,793,955,761.15/694,419.84
  6. Step 6: Final answer
    x = 562,763.24

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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.