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Finding the Fourth Proportional to 404,905.40, 607,358.10 and 383,132.60

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Solution

The fourth proportional to 404,905.40, 607,358.10 and 383,132.60 is: 574,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,905.40 : 607,358.10 = 383,132.60 : x
  2. Step 2: Convert to fraction form
    404,905.40/607,358.10 = 383,132.60/x
  3. Step 3: Cross multiply
    404,905.40x = 607,358.10 × 383,132.60
  4. Step 4: Simplify right side
    404,905.40x = 232,698,687,984.06
  5. Step 5: Solve for x
    x = 232,698,687,984.06/404,905.40
  6. Step 6: Final answer
    x = 574,698.90

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1.5x scale

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.