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Finding the Fourth Proportional to 416,011.05, 623,906.28 and 191,256.66

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Solution

The fourth proportional to 416,011.05, 623,906.28 and 191,256.66 is: 286,834.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,011.05 : 623,906.28 = 191,256.66 : x
  2. Step 2: Convert to fraction form
    416,011.05/623,906.28 = 191,256.66/x
  3. Step 3: Cross multiply
    416,011.05x = 623,906.28 × 191,256.66
  4. Step 4: Simplify right side
    416,011.05x = 119,326,231,265.83
  5. Step 5: Solve for x
    x = 119,326,231,265.83/416,011.05
  6. Step 6: Final answer
    x = 286,834.28

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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.