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Finding the Fourth Proportional to 352,656.40, 528,984.60 and 103,338.40

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Solution

The fourth proportional to 352,656.40, 528,984.60 and 103,338.40 is: 155,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,656.40 : 528,984.60 = 103,338.40 : x
  2. Step 2: Convert to fraction form
    352,656.40/528,984.60 = 103,338.40/x
  3. Step 3: Cross multiply
    352,656.40x = 528,984.60 × 103,338.40
  4. Step 4: Simplify right side
    352,656.40x = 54,664,422,188.64
  5. Step 5: Solve for x
    x = 54,664,422,188.64/352,656.40
  6. Step 6: Final answer
    x = 155,007.60

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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.