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Finding the Fourth Proportional to 528,560.87, 792,603.16 and 315,427.19

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Solution

The fourth proportional to 528,560.87, 792,603.16 and 315,427.19 is: 472,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,560.87 : 792,603.16 = 315,427.19 : x
  2. Step 2: Convert to fraction form
    528,560.87/792,603.16 = 315,427.19/x
  3. Step 3: Cross multiply
    528,560.87x = 792,603.16 × 315,427.19
  4. Step 4: Simplify right side
    528,560.87x = 250,008,582,792.34
  5. Step 5: Solve for x
    x = 250,008,582,792.34/528,560.87
  6. Step 6: Final answer
    x = 472,998.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.