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Finding the Fourth Proportional to 725,437.60, 1,016,662.40 and 725,437.60

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Solution

The fourth proportional to 725,437.60, 1,016,662.40 and 725,437.60 is: 1,016,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,437.60 : 1,016,662.40 = 725,437.60 : x
  2. Step 2: Convert to fraction form
    725,437.60/1,016,662.40 = 725,437.60/x
  3. Step 3: Cross multiply
    725,437.60x = 1,016,662.40 × 725,437.60
  4. Step 4: Simplify right side
    725,437.60x = 737,525,131,466.24
  5. Step 5: Solve for x
    x = 737,525,131,466.24/725,437.60
  6. Step 6: Final answer
    x = 1,016,662.40

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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.