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Finding the Fourth Proportional to 822,406.40, 1,134,573.32 and 550,561.88

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Solution

The fourth proportional to 822,406.40, 1,134,573.32 and 550,561.88 is: 759,542.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,406.40 : 1,134,573.32 = 550,561.88 : x
  2. Step 2: Convert to fraction form
    822,406.40/1,134,573.32 = 550,561.88/x
  3. Step 3: Cross multiply
    822,406.40x = 1,134,573.32 × 550,561.88
  4. Step 4: Simplify right side
    822,406.40x = 624,652,814,790.99
  5. Step 5: Solve for x
    x = 624,652,814,790.99/822,406.40
  6. Step 6: Final answer
    x = 759,542.74

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Double scale
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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.