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Finding the Fourth Proportional to 386,507.08, 533,266.50 and 250,543.72

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Solution

The fourth proportional to 386,507.08, 533,266.50 and 250,543.72 is: 345,676.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,507.08 : 533,266.50 = 250,543.72 : x
  2. Step 2: Convert to fraction form
    386,507.08/533,266.50 = 250,543.72/x
  3. Step 3: Cross multiply
    386,507.08x = 533,266.50 × 250,543.72
  4. Step 4: Simplify right side
    386,507.08x = 133,606,572,661.38
  5. Step 5: Solve for x
    x = 133,606,572,661.38/386,507.08
  6. Step 6: Final answer
    x = 345,676.91

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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.