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Finding the Fourth Proportional to 153,879.60, 230,819.40 and 123,812.40

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Solution

The fourth proportional to 153,879.60, 230,819.40 and 123,812.40 is: 185,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,879.60 : 230,819.40 = 123,812.40 : x
  2. Step 2: Convert to fraction form
    153,879.60/230,819.40 = 123,812.40/x
  3. Step 3: Cross multiply
    153,879.60x = 230,819.40 × 123,812.40
  4. Step 4: Simplify right side
    153,879.60x = 28,578,303,880.56
  5. Step 5: Solve for x
    x = 28,578,303,880.56/153,879.60
  6. Step 6: Final answer
    x = 185,718.60

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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.