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Finding the Fourth Proportional to 445,909.15, 615,865.71 and 293,628.16

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Solution

The fourth proportional to 445,909.15, 615,865.71 and 293,628.16 is: 405,543.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,909.15 : 615,865.71 = 293,628.16 : x
  2. Step 2: Convert to fraction form
    445,909.15/615,865.71 = 293,628.16/x
  3. Step 3: Cross multiply
    445,909.15x = 615,865.71 × 293,628.16
  4. Step 4: Simplify right side
    445,909.15x = 180,835,515,234.39
  5. Step 5: Solve for x
    x = 180,835,515,234.39/445,909.15
  6. Step 6: Final answer
    x = 405,543.41

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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.