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Finding the Fourth Proportional to 56,968.94, 85,507.02 and 28,909.14

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Solution

The fourth proportional to 56,968.94, 85,507.02 and 28,909.14 is: 43,390.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,968.94 : 85,507.02 = 28,909.14 : x
  2. Step 2: Convert to fraction form
    56,968.94/85,507.02 = 28,909.14/x
  3. Step 3: Cross multiply
    56,968.94x = 85,507.02 × 28,909.14
  4. Step 4: Simplify right side
    56,968.94x = 2,471,934,412.16
  5. Step 5: Solve for x
    x = 2,471,934,412.16/56,968.94
  6. Step 6: Final answer
    x = 43,390.91

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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.