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Finding the Fourth Proportional to 408,924.40, 613,386.60 and 113,436.40

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Solution

The fourth proportional to 408,924.40, 613,386.60 and 113,436.40 is: 170,154.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,924.40 : 613,386.60 = 113,436.40 : x
  2. Step 2: Convert to fraction form
    408,924.40/613,386.60 = 113,436.40/x
  3. Step 3: Cross multiply
    408,924.40x = 613,386.60 × 113,436.40
  4. Step 4: Simplify right side
    408,924.40x = 69,580,367,712.24
  5. Step 5: Solve for x
    x = 69,580,367,712.24/408,924.40
  6. Step 6: Final answer
    x = 170,154.60

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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.