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Finding the Fourth Proportional to 64,940.60, 97,403.70 and 53,233.40

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Solution

The fourth proportional to 64,940.60, 97,403.70 and 53,233.40 is: 79,844.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,940.60 : 97,403.70 = 53,233.40 : x
  2. Step 2: Convert to fraction form
    64,940.60/97,403.70 = 53,233.40/x
  3. Step 3: Cross multiply
    64,940.60x = 97,403.70 × 53,233.40
  4. Step 4: Simplify right side
    64,940.60x = 5,185,130,123.58
  5. Step 5: Solve for x
    x = 5,185,130,123.58/64,940.60
  6. Step 6: Final answer
    x = 79,844.20

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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.