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Finding the Fourth Proportional to 867,907.52, 1,197,699 and 485,948

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Solution

The fourth proportional to 867,907.52, 1,197,699 and 485,948 is: 670,600.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,907.52 : 1,197,699 = 485,948 : x
  2. Step 2: Convert to fraction form
    867,907.52/1,197,699 = 485,948/x
  3. Step 3: Cross multiply
    867,907.52x = 1,197,699 × 485,948
  4. Step 4: Simplify right side
    867,907.52x = 582,019,433,652
  5. Step 5: Solve for x
    x = 582,019,433,652/867,907.52
  6. Step 6: Final answer
    x = 670,600.75

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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.