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Finding the Fourth Proportional to 147,210.72, 220,881.72 and 53,694.60

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Solution

The fourth proportional to 147,210.72, 220,881.72 and 53,694.60 is: 80,565.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,210.72 : 220,881.72 = 53,694.60 : x
  2. Step 2: Convert to fraction form
    147,210.72/220,881.72 = 53,694.60/x
  3. Step 3: Cross multiply
    147,210.72x = 220,881.72 × 53,694.60
  4. Step 4: Simplify right side
    147,210.72x = 11,860,155,602.71
  5. Step 5: Solve for x
    x = 11,860,155,602.71/147,210.72
  6. Step 6: Final answer
    x = 80,565.84

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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.