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Finding the Fourth Proportional to 724,338.65, 999,855.75 and 621,952.88

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Solution

The fourth proportional to 724,338.65, 999,855.75 and 621,952.88 is: 858,525.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,338.65 : 999,855.75 = 621,952.88 : x
  2. Step 2: Convert to fraction form
    724,338.65/999,855.75 = 621,952.88/x
  3. Step 3: Cross multiply
    724,338.65x = 999,855.75 × 621,952.88
  4. Step 4: Simplify right side
    724,338.65x = 621,863,163,297.06
  5. Step 5: Solve for x
    x = 621,863,163,297.06/724,338.65
  6. Step 6: Final answer
    x = 858,525.45

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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.