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Finding the Fourth Proportional to 404,988.60, 607,474.70 and 105,462.56

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Solution

The fourth proportional to 404,988.60, 607,474.70 and 105,462.56 is: 158,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,988.60 : 607,474.70 = 105,462.56 : x
  2. Step 2: Convert to fraction form
    404,988.60/607,474.70 = 105,462.56/x
  3. Step 3: Cross multiply
    404,988.60x = 607,474.70 × 105,462.56
  4. Step 4: Simplify right side
    404,988.60x = 64,065,836,997.23
  5. Step 5: Solve for x
    x = 64,065,836,997.23/404,988.60
  6. Step 6: Final answer
    x = 158,191.70

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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.