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Finding the Fourth Proportional to 825,840.90, 1,153,815.30 and 825,840.90

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Solution

The fourth proportional to 825,840.90, 1,153,815.30 and 825,840.90 is: 1,153,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,840.90 : 1,153,815.30 = 825,840.90 : x
  2. Step 2: Convert to fraction form
    825,840.90/1,153,815.30 = 825,840.90/x
  3. Step 3: Cross multiply
    825,840.90x = 1,153,815.30 × 825,840.90
  4. Step 4: Simplify right side
    825,840.90x = 952,867,865,785.77
  5. Step 5: Solve for x
    x = 952,867,865,785.77/825,840.90
  6. Step 6: Final answer
    x = 1,153,815.30

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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.