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Finding the Fourth Proportional to 94,673.72, 142,005.72 and 28,114.40

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Solution

The fourth proportional to 94,673.72, 142,005.72 and 28,114.40 is: 42,170.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,673.72 : 142,005.72 = 28,114.40 : x
  2. Step 2: Convert to fraction form
    94,673.72/142,005.72 = 28,114.40/x
  3. Step 3: Cross multiply
    94,673.72x = 142,005.72 × 28,114.40
  4. Step 4: Simplify right side
    94,673.72x = 3,992,405,969.38
  5. Step 5: Solve for x
    x = 3,992,405,969.38/94,673.72
  6. Step 6: Final answer
    x = 42,170.16

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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.