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Finding the Fourth Proportional to 714,511.17, 986,021.51 and 392,226.75

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Solution

The fourth proportional to 714,511.17, 986,021.51 and 392,226.75 is: 541,270.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,511.17 : 986,021.51 = 392,226.75 : x
  2. Step 2: Convert to fraction form
    714,511.17/986,021.51 = 392,226.75/x
  3. Step 3: Cross multiply
    714,511.17x = 986,021.51 × 392,226.75
  4. Step 4: Simplify right side
    714,511.17x = 386,744,010,336.26
  5. Step 5: Solve for x
    x = 386,744,010,336.26/714,511.17
  6. Step 6: Final answer
    x = 541,270.77

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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.