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Finding the Fourth Proportional to 641,578.40, 885,599.51 and 369,754.81

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Solution

The fourth proportional to 641,578.40, 885,599.51 and 369,754.81 is: 510,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,578.40 : 885,599.51 = 369,754.81 : x
  2. Step 2: Convert to fraction form
    641,578.40/885,599.51 = 369,754.81/x
  3. Step 3: Cross multiply
    641,578.40x = 885,599.51 × 369,754.81
  4. Step 4: Simplify right side
    641,578.40x = 327,454,678,556.14
  5. Step 5: Solve for x
    x = 327,454,678,556.14/641,578.40
  6. Step 6: Final answer
    x = 510,389.19

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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.