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Finding the Fourth Proportional to 886,353.28, 1,223,256 and 528,657.28

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Solution

The fourth proportional to 886,353.28, 1,223,256 and 528,657.28 is: 729,599.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,353.28 : 1,223,256 = 528,657.28 : x
  2. Step 2: Convert to fraction form
    886,353.28/1,223,256 = 528,657.28/x
  3. Step 3: Cross multiply
    886,353.28x = 1,223,256 × 528,657.28
  4. Step 4: Simplify right side
    886,353.28x = 646,683,189,703.68
  5. Step 5: Solve for x
    x = 646,683,189,703.68/886,353.28
  6. Step 6: Final answer
    x = 729,599.82

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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.