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Finding the Fourth Proportional to 922,776.40, 1,384,164.60 and 603,911.80

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Solution

The fourth proportional to 922,776.40, 1,384,164.60 and 603,911.80 is: 905,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,776.40 : 1,384,164.60 = 603,911.80 : x
  2. Step 2: Convert to fraction form
    922,776.40/1,384,164.60 = 603,911.80/x
  3. Step 3: Cross multiply
    922,776.40x = 1,384,164.60 × 603,911.80
  4. Step 4: Simplify right side
    922,776.40x = 835,913,335,082.28
  5. Step 5: Solve for x
    x = 835,913,335,082.28/922,776.40
  6. Step 6: Final answer
    x = 905,867.70

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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.