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Finding the Fourth Proportional to 64,955.40, 97,217.10 and 47,135.40

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Solution

The fourth proportional to 64,955.40, 97,217.10 and 47,135.40 is: 70,546.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,955.40 : 97,217.10 = 47,135.40 : x
  2. Step 2: Convert to fraction form
    64,955.40/97,217.10 = 47,135.40/x
  3. Step 3: Cross multiply
    64,955.40x = 97,217.10 × 47,135.40
  4. Step 4: Simplify right side
    64,955.40x = 4,582,366,895.34
  5. Step 5: Solve for x
    x = 4,582,366,895.34/64,955.40
  6. Step 6: Final answer
    x = 70,546.36

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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.