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Finding the Fourth Proportional to 9,136.70, 13,700.79 and 4,752.98

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Solution

The fourth proportional to 9,136.70, 13,700.79 and 4,752.98 is: 7,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,136.70 : 13,700.79 = 4,752.98 : x
  2. Step 2: Convert to fraction form
    9,136.70/13,700.79 = 4,752.98/x
  3. Step 3: Cross multiply
    9,136.70x = 13,700.79 × 4,752.98
  4. Step 4: Simplify right side
    9,136.70x = 65,119,488.59
  5. Step 5: Solve for x
    x = 65,119,488.59/9,136.70
  6. Step 6: Final answer
    x = 7,127.25

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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.