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Finding the Fourth Proportional to 694,520.80, 973,728.80 and 694,520.80

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Solution

The fourth proportional to 694,520.80, 973,728.80 and 694,520.80 is: 973,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,520.80 : 973,728.80 = 694,520.80 : x
  2. Step 2: Convert to fraction form
    694,520.80/973,728.80 = 694,520.80/x
  3. Step 3: Cross multiply
    694,520.80x = 973,728.80 × 694,520.80
  4. Step 4: Simplify right side
    694,520.80x = 676,274,905,159.04
  5. Step 5: Solve for x
    x = 676,274,905,159.04/694,520.80
  6. Step 6: Final answer
    x = 973,728.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.