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Finding the Fourth Proportional to 406,925.34, 561,563.72 and 225,644.91

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Solution

The fourth proportional to 406,925.34, 561,563.72 and 225,644.91 is: 311,393.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,925.34 : 561,563.72 = 225,644.91 : x
  2. Step 2: Convert to fraction form
    406,925.34/561,563.72 = 225,644.91/x
  3. Step 3: Cross multiply
    406,925.34x = 561,563.72 × 225,644.91
  4. Step 4: Simplify right side
    406,925.34x = 126,713,995,058.67
  5. Step 5: Solve for x
    x = 126,713,995,058.67/406,925.34
  6. Step 6: Final answer
    x = 311,393.72

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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.