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Finding the Fourth Proportional to 653,145.71, 901,183.32 and 381,058.29

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Solution

The fourth proportional to 653,145.71, 901,183.32 and 381,058.29 is: 525,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,145.71 : 901,183.32 = 381,058.29 : x
  2. Step 2: Convert to fraction form
    653,145.71/901,183.32 = 381,058.29/x
  3. Step 3: Cross multiply
    653,145.71x = 901,183.32 × 381,058.29
  4. Step 4: Simplify right side
    653,145.71x = 343,403,374,895.72
  5. Step 5: Solve for x
    x = 343,403,374,895.72/653,145.71
  6. Step 6: Final answer
    x = 525,768.40

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Double scale
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Similar ratio
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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.