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Finding the Fourth Proportional to 404,940.60, 607,410.90 and 124,421.40

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Solution

The fourth proportional to 404,940.60, 607,410.90 and 124,421.40 is: 186,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,940.60 : 607,410.90 = 124,421.40 : x
  2. Step 2: Convert to fraction form
    404,940.60/607,410.90 = 124,421.40/x
  3. Step 3: Cross multiply
    404,940.60x = 607,410.90 × 124,421.40
  4. Step 4: Simplify right side
    404,940.60x = 75,574,914,553.26
  5. Step 5: Solve for x
    x = 75,574,914,553.26/404,940.60
  6. Step 6: Final answer
    x = 186,632.10

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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.