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Finding the Fourth Proportional to 386,772.73, 533,814.56 and 243,577.69

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Solution

The fourth proportional to 386,772.73, 533,814.56 and 243,577.69 is: 336,180.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,772.73 : 533,814.56 = 243,577.69 : x
  2. Step 2: Convert to fraction form
    386,772.73/533,814.56 = 243,577.69/x
  3. Step 3: Cross multiply
    386,772.73x = 533,814.56 × 243,577.69
  4. Step 4: Simplify right side
    386,772.73x = 130,025,317,413.17
  5. Step 5: Solve for x
    x = 130,025,317,413.17/386,772.73
  6. Step 6: Final answer
    x = 336,180.16

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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.