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Finding the Fourth Proportional to 64,430.55, 96,481.80 and 61,478.10

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Solution

The fourth proportional to 64,430.55, 96,481.80 and 61,478.10 is: 92,060.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,430.55 : 96,481.80 = 61,478.10 : x
  2. Step 2: Convert to fraction form
    64,430.55/96,481.80 = 61,478.10/x
  3. Step 3: Cross multiply
    64,430.55x = 96,481.80 × 61,478.10
  4. Step 4: Simplify right side
    64,430.55x = 5,931,517,748.58
  5. Step 5: Solve for x
    x = 5,931,517,748.58/64,430.55
  6. Step 6: Final answer
    x = 92,060.64

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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.