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Finding the Fourth Proportional to 53,155.72, 79,681.74 and 25,473.16

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Solution

The fourth proportional to 53,155.72, 79,681.74 and 25,473.16 is: 38,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,155.72 : 79,681.74 = 25,473.16 : x
  2. Step 2: Convert to fraction form
    53,155.72/79,681.74 = 25,473.16/x
  3. Step 3: Cross multiply
    53,155.72x = 79,681.74 × 25,473.16
  4. Step 4: Simplify right side
    53,155.72x = 2,029,745,712.10
  5. Step 5: Solve for x
    x = 2,029,745,712.10/53,155.72
  6. Step 6: Final answer
    x = 38,184.90

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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.