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Finding the Fourth Proportional to 58,580.55, 80,840.16 and 31,722.84

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Solution

The fourth proportional to 58,580.55, 80,840.16 and 31,722.84 is: 43,776.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,580.55 : 80,840.16 = 31,722.84 : x
  2. Step 2: Convert to fraction form
    58,580.55/80,840.16 = 31,722.84/x
  3. Step 3: Cross multiply
    58,580.55x = 80,840.16 × 31,722.84
  4. Step 4: Simplify right side
    58,580.55x = 2,564,479,461.25
  5. Step 5: Solve for x
    x = 2,564,479,461.25/58,580.55
  6. Step 6: Final answer
    x = 43,776.98

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1.5x scale

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.