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Finding the Fourth Proportional to 58,728.85, 88,064.55 and 40,968

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Solution

The fourth proportional to 58,728.85, 88,064.55 and 40,968 is: 61,431.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,728.85 : 88,064.55 = 40,968 : x
  2. Step 2: Convert to fraction form
    58,728.85/88,064.55 = 40,968/x
  3. Step 3: Cross multiply
    58,728.85x = 88,064.55 × 40,968
  4. Step 4: Simplify right side
    58,728.85x = 3,607,828,484.40
  5. Step 5: Solve for x
    x = 3,607,828,484.40/58,728.85
  6. Step 6: Final answer
    x = 61,431.96

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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.