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Finding the Fourth Proportional to 693,641.54, 957,222.56 and 387,717.59

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Solution

The fourth proportional to 693,641.54, 957,222.56 and 387,717.59 is: 535,048.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,641.54 : 957,222.56 = 387,717.59 : x
  2. Step 2: Convert to fraction form
    693,641.54/957,222.56 = 387,717.59/x
  3. Step 3: Cross multiply
    693,641.54x = 957,222.56 × 387,717.59
  4. Step 4: Simplify right side
    693,641.54x = 371,132,022,118.24
  5. Step 5: Solve for x
    x = 371,132,022,118.24/693,641.54
  6. Step 6: Final answer
    x = 535,048.73

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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.