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Finding the Fourth Proportional to 905,669, 1,250,919.37 and 660,265.13

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Solution

The fourth proportional to 905,669, 1,250,919.37 and 660,265.13 is: 911,965.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,669 : 1,250,919.37 = 660,265.13 : x
  2. Step 2: Convert to fraction form
    905,669/1,250,919.37 = 660,265.13/x
  3. Step 3: Cross multiply
    905,669x = 1,250,919.37 × 660,265.13
  4. Step 4: Simplify right side
    905,669x = 825,938,437,151.24
  5. Step 5: Solve for x
    x = 825,938,437,151.24/905,669
  6. Step 6: Final answer
    x = 911,965.01

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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.