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Finding the Fourth Proportional to 636,556.32, 878,430.18 and 350,076.40

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Solution

The fourth proportional to 636,556.32, 878,430.18 and 350,076.40 is: 483,095.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,556.32 : 878,430.18 = 350,076.40 : x
  2. Step 2: Convert to fraction form
    636,556.32/878,430.18 = 350,076.40/x
  3. Step 3: Cross multiply
    636,556.32x = 878,430.18 × 350,076.40
  4. Step 4: Simplify right side
    636,556.32x = 307,517,675,065.75
  5. Step 5: Solve for x
    x = 307,517,675,065.75/636,556.32
  6. Step 6: Final answer
    x = 483,095.78

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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.