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Finding the Fourth Proportional to 633,988.58, 874,993.95 and 392,348.97

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Solution

The fourth proportional to 633,988.58, 874,993.95 and 392,348.97 is: 541,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,988.58 : 874,993.95 = 392,348.97 : x
  2. Step 2: Convert to fraction form
    633,988.58/874,993.95 = 392,348.97/x
  3. Step 3: Cross multiply
    633,988.58x = 874,993.95 × 392,348.97
  4. Step 4: Simplify right side
    633,988.58x = 343,302,975,038.73
  5. Step 5: Solve for x
    x = 343,302,975,038.73/633,988.58
  6. Step 6: Final answer
    x = 541,497.10

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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.