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Finding the Fourth Proportional to 981,994.86, 1,355,338.92 and 614,642.34

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Solution

The fourth proportional to 981,994.86, 1,355,338.92 and 614,642.34 is: 848,322.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,994.86 : 1,355,338.92 = 614,642.34 : x
  2. Step 2: Convert to fraction form
    981,994.86/1,355,338.92 = 614,642.34/x
  3. Step 3: Cross multiply
    981,994.86x = 1,355,338.92 × 614,642.34
  4. Step 4: Simplify right side
    981,994.86x = 833,048,685,281.87
  5. Step 5: Solve for x
    x = 833,048,685,281.87/981,994.86
  6. Step 6: Final answer
    x = 848,322.86

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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.