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Finding the Fourth Proportional to 825,237.60, 1,237,683.60 and 404,815.20

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Solution

The fourth proportional to 825,237.60, 1,237,683.60 and 404,815.20 is: 607,138.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,237.60 : 1,237,683.60 = 404,815.20 : x
  2. Step 2: Convert to fraction form
    825,237.60/1,237,683.60 = 404,815.20/x
  3. Step 3: Cross multiply
    825,237.60x = 1,237,683.60 × 404,815.20
  4. Step 4: Simplify right side
    825,237.60x = 501,033,134,070.72
  5. Step 5: Solve for x
    x = 501,033,134,070.72/825,237.60
  6. Step 6: Final answer
    x = 607,138.03

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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.