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Finding the Fourth Proportional to 64,980.60, 97,470.90 and 28,044.60

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Solution

The fourth proportional to 64,980.60, 97,470.90 and 28,044.60 is: 42,066.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,980.60 : 97,470.90 = 28,044.60 : x
  2. Step 2: Convert to fraction form
    64,980.60/97,470.90 = 28,044.60/x
  3. Step 3: Cross multiply
    64,980.60x = 97,470.90 × 28,044.60
  4. Step 4: Simplify right side
    64,980.60x = 2,733,532,402.14
  5. Step 5: Solve for x
    x = 2,733,532,402.14/64,980.60
  6. Step 6: Final answer
    x = 42,066.90

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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.