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Finding the Fourth Proportional to 286,341.17, 395,348.51 and 178,959.47

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Solution

The fourth proportional to 286,341.17, 395,348.51 and 178,959.47 is: 247,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,341.17 : 395,348.51 = 178,959.47 : x
  2. Step 2: Convert to fraction form
    286,341.17/395,348.51 = 178,959.47/x
  3. Step 3: Cross multiply
    286,341.17x = 395,348.51 × 178,959.47
  4. Step 4: Simplify right side
    286,341.17x = 70,751,358,285.55
  5. Step 5: Solve for x
    x = 70,751,358,285.55/286,341.17
  6. Step 6: Final answer
    x = 247,087.62

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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.