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Finding the Fourth Proportional to 740,118.38, 1,021,372 and 434,200.02

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Solution

The fourth proportional to 740,118.38, 1,021,372 and 434,200.02 is: 599,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,118.38 : 1,021,372 = 434,200.02 : x
  2. Step 2: Convert to fraction form
    740,118.38/1,021,372 = 434,200.02/x
  3. Step 3: Cross multiply
    740,118.38x = 1,021,372 × 434,200.02
  4. Step 4: Simplify right side
    740,118.38x = 443,479,742,827.44
  5. Step 5: Solve for x
    x = 443,479,742,827.44/740,118.38
  6. Step 6: Final answer
    x = 599,201.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.