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Finding the Fourth Proportional to 505,892.63, 698,131.95 and 279,538.13

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Solution

The fourth proportional to 505,892.63, 698,131.95 and 279,538.13 is: 385,762.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,892.63 : 698,131.95 = 279,538.13 : x
  2. Step 2: Convert to fraction form
    505,892.63/698,131.95 = 279,538.13/x
  3. Step 3: Cross multiply
    505,892.63x = 698,131.95 × 279,538.13
  4. Step 4: Simplify right side
    505,892.63x = 195,154,500,493.32
  5. Step 5: Solve for x
    x = 195,154,500,493.32/505,892.63
  6. Step 6: Final answer
    x = 385,762.69

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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.