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Finding the Fourth Proportional to 286,100.61, 394,811.04 and 157,038.92

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Solution

The fourth proportional to 286,100.61, 394,811.04 and 157,038.92 is: 216,709.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,100.61 : 394,811.04 = 157,038.92 : x
  2. Step 2: Convert to fraction form
    286,100.61/394,811.04 = 157,038.92/x
  3. Step 3: Cross multiply
    286,100.61x = 394,811.04 × 157,038.92
  4. Step 4: Simplify right side
    286,100.61x = 62,000,697,351.62
  5. Step 5: Solve for x
    x = 62,000,697,351.62/286,100.61
  6. Step 6: Final answer
    x = 216,709.42

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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.