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Finding the Fourth Proportional to 582,439.21, 804,014.10 and 391,563.32

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Solution

The fourth proportional to 582,439.21, 804,014.10 and 391,563.32 is: 540,524.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,439.21 : 804,014.10 = 391,563.32 : x
  2. Step 2: Convert to fraction form
    582,439.21/804,014.10 = 391,563.32/x
  3. Step 3: Cross multiply
    582,439.21x = 804,014.10 × 391,563.32
  4. Step 4: Simplify right side
    582,439.21x = 314,822,426,302.74
  5. Step 5: Solve for x
    x = 314,822,426,302.74/582,439.21
  6. Step 6: Final answer
    x = 540,524.10

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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.