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Finding the Fourth Proportional to 64,967.72, 97,451.58 and 15,719.72

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Solution

The fourth proportional to 64,967.72, 97,451.58 and 15,719.72 is: 23,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,967.72 : 97,451.58 = 15,719.72 : x
  2. Step 2: Convert to fraction form
    64,967.72/97,451.58 = 15,719.72/x
  3. Step 3: Cross multiply
    64,967.72x = 97,451.58 × 15,719.72
  4. Step 4: Simplify right side
    64,967.72x = 1,531,911,488.29
  5. Step 5: Solve for x
    x = 1,531,911,488.29/64,967.72
  6. Step 6: Final answer
    x = 23,579.58

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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.