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Finding the Fourth Proportional to 506,145.33, 698,453.15 and 279,776.25

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Solution

The fourth proportional to 506,145.33, 698,453.15 and 279,776.25 is: 386,076.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,145.33 : 698,453.15 = 279,776.25 : x
  2. Step 2: Convert to fraction form
    506,145.33/698,453.15 = 279,776.25/x
  3. Step 3: Cross multiply
    506,145.33x = 698,453.15 × 279,776.25
  4. Step 4: Simplify right side
    506,145.33x = 195,410,601,708.81
  5. Step 5: Solve for x
    x = 195,410,601,708.81/506,145.33
  6. Step 6: Final answer
    x = 386,076.07

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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.