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Finding the Fourth Proportional to 58,728.72, 81,056.88 and 34,868.64

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Solution

The fourth proportional to 58,728.72, 81,056.88 and 34,868.64 is: 48,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,728.72 : 81,056.88 = 34,868.64 : x
  2. Step 2: Convert to fraction form
    58,728.72/81,056.88 = 34,868.64/x
  3. Step 3: Cross multiply
    58,728.72x = 81,056.88 × 34,868.64
  4. Step 4: Simplify right side
    58,728.72x = 2,826,343,168.24
  5. Step 5: Solve for x
    x = 2,826,343,168.24/58,728.72
  6. Step 6: Final answer
    x = 48,125.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.