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Finding the Fourth Proportional to 837,069.80, 1,255,604.70 and 553,634.60

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Solution

The fourth proportional to 837,069.80, 1,255,604.70 and 553,634.60 is: 830,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,069.80 : 1,255,604.70 = 553,634.60 : x
  2. Step 2: Convert to fraction form
    837,069.80/1,255,604.70 = 553,634.60/x
  3. Step 3: Cross multiply
    837,069.80x = 1,255,604.70 × 553,634.60
  4. Step 4: Simplify right side
    837,069.80x = 695,146,205,842.62
  5. Step 5: Solve for x
    x = 695,146,205,842.62/837,069.80
  6. Step 6: Final answer
    x = 830,451.90

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Double scale
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Similar ratio
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1.5x scale

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.