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Finding the Fourth Proportional to 64,824.40, 97,020.60 and 47,004.40

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Solution

The fourth proportional to 64,824.40, 97,020.60 and 47,004.40 is: 70,349.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,824.40 : 97,020.60 = 47,004.40 : x
  2. Step 2: Convert to fraction form
    64,824.40/97,020.60 = 47,004.40/x
  3. Step 3: Cross multiply
    64,824.40x = 97,020.60 × 47,004.40
  4. Step 4: Simplify right side
    64,824.40x = 4,560,395,090.64
  5. Step 5: Solve for x
    x = 4,560,395,090.64/64,824.40
  6. Step 6: Final answer
    x = 70,349.98

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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.