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Finding the Fourth Proportional to 12,655.94, 18,980.27 and 4,756.01

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Solution

The fourth proportional to 12,655.94, 18,980.27 and 4,756.01 is: 7,132.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.94 : 18,980.27 = 4,756.01 : x
  2. Step 2: Convert to fraction form
    12,655.94/18,980.27 = 4,756.01/x
  3. Step 3: Cross multiply
    12,655.94x = 18,980.27 × 4,756.01
  4. Step 4: Simplify right side
    12,655.94x = 90,270,330.14
  5. Step 5: Solve for x
    x = 90,270,330.14/12,655.94
  6. Step 6: Final answer
    x = 7,132.65

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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.