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Finding the Fourth Proportional to 615,072.60, 922,608.90 and 548,717.40

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Solution

The fourth proportional to 615,072.60, 922,608.90 and 548,717.40 is: 823,076.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,072.60 : 922,608.90 = 548,717.40 : x
  2. Step 2: Convert to fraction form
    615,072.60/922,608.90 = 548,717.40/x
  3. Step 3: Cross multiply
    615,072.60x = 922,608.90 × 548,717.40
  4. Step 4: Simplify right side
    615,072.60x = 506,251,556,824.86
  5. Step 5: Solve for x
    x = 506,251,556,824.86/615,072.60
  6. Step 6: Final answer
    x = 823,076.10

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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.