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Finding the Fourth Proportional to 697,893.94, 963,017.13 and 391,908.34

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Solution

The fourth proportional to 697,893.94, 963,017.13 and 391,908.34 is: 540,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,893.94 : 963,017.13 = 391,908.34 : x
  2. Step 2: Convert to fraction form
    697,893.94/963,017.13 = 391,908.34/x
  3. Step 3: Cross multiply
    697,893.94x = 963,017.13 × 391,908.34
  4. Step 4: Simplify right side
    697,893.94x = 377,414,444,809.86
  5. Step 5: Solve for x
    x = 377,414,444,809.86/697,893.94
  6. Step 6: Final answer
    x = 540,790.55

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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.