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Finding the Fourth Proportional to 654,329.20, 916,994 and 654,329.20

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Solution

The fourth proportional to 654,329.20, 916,994 and 654,329.20 is: 916,994

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,329.20 : 916,994 = 654,329.20 : x
  2. Step 2: Convert to fraction form
    654,329.20/916,994 = 654,329.20/x
  3. Step 3: Cross multiply
    654,329.20x = 916,994 × 654,329.20
  4. Step 4: Simplify right side
    654,329.20x = 600,015,950,424.80
  5. Step 5: Solve for x
    x = 600,015,950,424.80/654,329.20
  6. Step 6: Final answer
    x = 916,994

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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.