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Finding the Fourth Proportional to 7,681.98, 11,533.91 and 7,329.63

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Solution

The fourth proportional to 7,681.98, 11,533.91 and 7,329.63 is: 11,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.98 : 11,533.91 = 7,329.63 : x
  2. Step 2: Convert to fraction form
    7,681.98/11,533.91 = 7,329.63/x
  3. Step 3: Cross multiply
    7,681.98x = 11,533.91 × 7,329.63
  4. Step 4: Simplify right side
    7,681.98x = 84,539,256.11
  5. Step 5: Solve for x
    x = 84,539,256.11/7,681.98
  6. Step 6: Final answer
    x = 11,004.88

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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.