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Finding the Fourth Proportional to 61,690.61, 92,572.77 and 56,671.45

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Solution

The fourth proportional to 61,690.61, 92,572.77 and 56,671.45 is: 85,041.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.61 : 92,572.77 = 56,671.45 : x
  2. Step 2: Convert to fraction form
    61,690.61/92,572.77 = 56,671.45/x
  3. Step 3: Cross multiply
    61,690.61x = 92,572.77 × 56,671.45
  4. Step 4: Simplify right side
    61,690.61x = 5,246,233,106.42
  5. Step 5: Solve for x
    x = 5,246,233,106.42/61,690.61
  6. Step 6: Final answer
    x = 85,041.03

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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.