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Finding the Fourth Proportional to 82,004.70, 122,970.60 and 32,068.20

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Solution

The fourth proportional to 82,004.70, 122,970.60 and 32,068.20 is: 48,088.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,004.70 : 122,970.60 = 32,068.20 : x
  2. Step 2: Convert to fraction form
    82,004.70/122,970.60 = 32,068.20/x
  3. Step 3: Cross multiply
    82,004.70x = 122,970.60 × 32,068.20
  4. Step 4: Simplify right side
    82,004.70x = 3,943,445,794.92
  5. Step 5: Solve for x
    x = 3,943,445,794.92/82,004.70
  6. Step 6: Final answer
    x = 48,088.05

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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.