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Finding the Fourth Proportional to 503,705.80, 695,126.46 and 274,275.65

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Solution

The fourth proportional to 503,705.80, 695,126.46 and 274,275.65 is: 378,507.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,705.80 : 695,126.46 = 274,275.65 : x
  2. Step 2: Convert to fraction form
    503,705.80/695,126.46 = 274,275.65/x
  3. Step 3: Cross multiply
    503,705.80x = 695,126.46 × 274,275.65
  4. Step 4: Simplify right side
    503,705.80x = 190,656,260,277.32
  5. Step 5: Solve for x
    x = 190,656,260,277.32/503,705.80
  6. Step 6: Final answer
    x = 378,507.18

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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.