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Finding the Fourth Proportional to 633,987.08, 874,991.88 and 392,347.47

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Solution

The fourth proportional to 633,987.08, 874,991.88 and 392,347.47 is: 541,495.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,987.08 : 874,991.88 = 392,347.47 : x
  2. Step 2: Convert to fraction form
    633,987.08/874,991.88 = 392,347.47/x
  3. Step 3: Cross multiply
    633,987.08x = 874,991.88 × 392,347.47
  4. Step 4: Simplify right side
    633,987.08x = 343,300,850,388.54
  5. Step 5: Solve for x
    x = 343,300,850,388.54/633,987.08
  6. Step 6: Final answer
    x = 541,495.03

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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.