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Finding the Fourth Proportional to 58,110.72, 80,580.48 and 56,140.80

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Solution

The fourth proportional to 58,110.72, 80,580.48 and 56,140.80 is: 77,848.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,110.72 : 80,580.48 = 56,140.80 : x
  2. Step 2: Convert to fraction form
    58,110.72/80,580.48 = 56,140.80/x
  3. Step 3: Cross multiply
    58,110.72x = 80,580.48 × 56,140.80
  4. Step 4: Simplify right side
    58,110.72x = 4,523,852,611.58
  5. Step 5: Solve for x
    x = 4,523,852,611.58/58,110.72
  6. Step 6: Final answer
    x = 77,848.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.