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Finding the Fourth Proportional to 280,363.44, 386,902.80 and 153,041.70

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Solution

The fourth proportional to 280,363.44, 386,902.80 and 153,041.70 is: 211,198.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,363.44 : 386,902.80 = 153,041.70 : x
  2. Step 2: Convert to fraction form
    280,363.44/386,902.80 = 153,041.70/x
  3. Step 3: Cross multiply
    280,363.44x = 386,902.80 × 153,041.70
  4. Step 4: Simplify right side
    280,363.44x = 59,212,262,246.76
  5. Step 5: Solve for x
    x = 59,212,262,246.76/280,363.44
  6. Step 6: Final answer
    x = 211,198.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.