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Finding the Fourth Proportional to 641,533.80, 885,218.02 and 369,548.57

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Solution

The fourth proportional to 641,533.80, 885,218.02 and 369,548.57 is: 509,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,533.80 : 885,218.02 = 369,548.57 : x
  2. Step 2: Convert to fraction form
    641,533.80/885,218.02 = 369,548.57/x
  3. Step 3: Cross multiply
    641,533.80x = 885,218.02 × 369,548.57
  4. Step 4: Simplify right side
    641,533.80x = 327,131,048,494.22
  5. Step 5: Solve for x
    x = 327,131,048,494.22/641,533.80
  6. Step 6: Final answer
    x = 509,920.21

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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.