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Finding the Fourth Proportional to 506,018.64, 698,331.75 and 291,190.85

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Solution

The fourth proportional to 506,018.64, 698,331.75 and 291,190.85 is: 401,858.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,018.64 : 698,331.75 = 291,190.85 : x
  2. Step 2: Convert to fraction form
    506,018.64/698,331.75 = 291,190.85/x
  3. Step 3: Cross multiply
    506,018.64x = 698,331.75 × 291,190.85
  4. Step 4: Simplify right side
    506,018.64x = 203,347,813,899.61
  5. Step 5: Solve for x
    x = 203,347,813,899.61/506,018.64
  6. Step 6: Final answer
    x = 401,858.34

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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.