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Finding the Fourth Proportional to 284,235.67, 392,258.85 and 156,919.46

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Solution

The fourth proportional to 284,235.67, 392,258.85 and 156,919.46 is: 216,556.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,235.67 : 392,258.85 = 156,919.46 : x
  2. Step 2: Convert to fraction form
    284,235.67/392,258.85 = 156,919.46/x
  3. Step 3: Cross multiply
    284,235.67x = 392,258.85 × 156,919.46
  4. Step 4: Simplify right side
    284,235.67x = 61,553,046,922.22
  5. Step 5: Solve for x
    x = 61,553,046,922.22/284,235.67
  6. Step 6: Final answer
    x = 216,556.38

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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.