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Finding the Fourth Proportional to 734,462.40, 1,101,693.60 and 693,128.10

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Solution

The fourth proportional to 734,462.40, 1,101,693.60 and 693,128.10 is: 1,039,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    734,462.40 : 1,101,693.60 = 693,128.10 : x
  2. Step 2: Convert to fraction form
    734,462.40/1,101,693.60 = 693,128.10/x
  3. Step 3: Cross multiply
    734,462.40x = 1,101,693.60 × 693,128.10
  4. Step 4: Simplify right side
    734,462.40x = 763,614,791,750.16
  5. Step 5: Solve for x
    x = 763,614,791,750.16/734,462.40
  6. Step 6: Final answer
    x = 1,039,692.15

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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.