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Finding the Fourth Proportional to 404,814.60, 607,221.90 and 124,345.80

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Solution

The fourth proportional to 404,814.60, 607,221.90 and 124,345.80 is: 186,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,814.60 : 607,221.90 = 124,345.80 : x
  2. Step 2: Convert to fraction form
    404,814.60/607,221.90 = 124,345.80/x
  3. Step 3: Cross multiply
    404,814.60x = 607,221.90 × 124,345.80
  4. Step 4: Simplify right side
    404,814.60x = 75,505,492,933.02
  5. Step 5: Solve for x
    x = 75,505,492,933.02/404,814.60
  6. Step 6: Final answer
    x = 186,518.70

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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.