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Finding the Fourth Proportional to 691,406.40, 954,140.64 and 373,454.40

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Solution

The fourth proportional to 691,406.40, 954,140.64 and 373,454.40 is: 515,366.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,406.40 : 954,140.64 = 373,454.40 : x
  2. Step 2: Convert to fraction form
    691,406.40/954,140.64 = 373,454.40/x
  3. Step 3: Cross multiply
    691,406.40x = 954,140.64 × 373,454.40
  4. Step 4: Simplify right side
    691,406.40x = 356,328,020,226.82
  5. Step 5: Solve for x
    x = 356,328,020,226.82/691,406.40
  6. Step 6: Final answer
    x = 515,366.97

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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.