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Finding the Fourth Proportional to 849,863.20, 1,191,908 and 849,863.20

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Solution

The fourth proportional to 849,863.20, 1,191,908 and 849,863.20 is: 1,191,908

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,863.20 : 1,191,908 = 849,863.20 : x
  2. Step 2: Convert to fraction form
    849,863.20/1,191,908 = 849,863.20/x
  3. Step 3: Cross multiply
    849,863.20x = 1,191,908 × 849,863.20
  4. Step 4: Simplify right side
    849,863.20x = 1,012,958,746,985.60
  5. Step 5: Solve for x
    x = 1,012,958,746,985.60/849,863.20
  6. Step 6: Final answer
    x = 1,191,908

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.