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Finding the Fourth Proportional to 61,783.72, 92,603.88 and 28,433.76

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Solution

The fourth proportional to 61,783.72, 92,603.88 and 28,433.76 is: 42,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,783.72 : 92,603.88 = 28,433.76 : x
  2. Step 2: Convert to fraction form
    61,783.72/92,603.88 = 28,433.76/x
  3. Step 3: Cross multiply
    61,783.72x = 92,603.88 × 28,433.76
  4. Step 4: Simplify right side
    61,783.72x = 2,633,076,498.99
  5. Step 5: Solve for x
    x = 2,633,076,498.99/61,783.72
  6. Step 6: Final answer
    x = 42,617.64

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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.