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Finding the Fourth Proportional to 608,545.51, 839,510.02 and 393,754.77

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Solution

The fourth proportional to 608,545.51, 839,510.02 and 393,754.77 is: 543,198.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,545.51 : 839,510.02 = 393,754.77 : x
  2. Step 2: Convert to fraction form
    608,545.51/839,510.02 = 393,754.77/x
  3. Step 3: Cross multiply
    608,545.51x = 839,510.02 × 393,754.77
  4. Step 4: Simplify right side
    608,545.51x = 330,561,075,329.99
  5. Step 5: Solve for x
    x = 330,561,075,329.99/608,545.51
  6. Step 6: Final answer
    x = 543,198.61

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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.