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Finding the Fourth Proportional to 875,773.40, 1,313,660.10 and 476,259.80

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Solution

The fourth proportional to 875,773.40, 1,313,660.10 and 476,259.80 is: 714,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,773.40 : 1,313,660.10 = 476,259.80 : x
  2. Step 2: Convert to fraction form
    875,773.40/1,313,660.10 = 476,259.80/x
  3. Step 3: Cross multiply
    875,773.40x = 1,313,660.10 × 476,259.80
  4. Step 4: Simplify right side
    875,773.40x = 625,643,496,493.98
  5. Step 5: Solve for x
    x = 625,643,496,493.98/875,773.40
  6. Step 6: Final answer
    x = 714,389.70

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1.5x scale

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.