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Finding the Fourth Proportional to 374,103.80, 561,155.70 and 187,047.80

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Solution

The fourth proportional to 374,103.80, 561,155.70 and 187,047.80 is: 280,571.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,103.80 : 561,155.70 = 187,047.80 : x
  2. Step 2: Convert to fraction form
    374,103.80/561,155.70 = 187,047.80/x
  3. Step 3: Cross multiply
    374,103.80x = 561,155.70 × 187,047.80
  4. Step 4: Simplify right side
    374,103.80x = 104,962,939,142.46
  5. Step 5: Solve for x
    x = 104,962,939,142.46/374,103.80
  6. Step 6: Final answer
    x = 280,571.70

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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.