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Finding the Fourth Proportional to 11,373.90, 17,056.80 and 5,136.90

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Solution

The fourth proportional to 11,373.90, 17,056.80 and 5,136.90 is: 7,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,373.90 : 17,056.80 = 5,136.90 : x
  2. Step 2: Convert to fraction form
    11,373.90/17,056.80 = 5,136.90/x
  3. Step 3: Cross multiply
    11,373.90x = 17,056.80 × 5,136.90
  4. Step 4: Simplify right side
    11,373.90x = 87,619,075.92
  5. Step 5: Solve for x
    x = 87,619,075.92/11,373.90
  6. Step 6: Final answer
    x = 7,703.52

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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.