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Finding the Fourth Proportional to 582,443.21, 804,019.62 and 391,567.32

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Solution

The fourth proportional to 582,443.21, 804,019.62 and 391,567.32 is: 540,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,443.21 : 804,019.62 = 391,567.32 : x
  2. Step 2: Convert to fraction form
    582,443.21/804,019.62 = 391,567.32/x
  3. Step 3: Cross multiply
    582,443.21x = 804,019.62 × 391,567.32
  4. Step 4: Simplify right side
    582,443.21x = 314,827,807,830.82
  5. Step 5: Solve for x
    x = 314,827,807,830.82/582,443.21
  6. Step 6: Final answer
    x = 540,529.62

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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.