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Finding the Fourth Proportional to 65,013.20, 97,325.40 and 61,168.40

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Solution

The fourth proportional to 65,013.20, 97,325.40 and 61,168.40 is: 91,569.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,013.20 : 97,325.40 = 61,168.40 : x
  2. Step 2: Convert to fraction form
    65,013.20/97,325.40 = 61,168.40/x
  3. Step 3: Cross multiply
    65,013.20x = 97,325.40 × 61,168.40
  4. Step 4: Simplify right side
    65,013.20x = 5,953,238,997.36
  5. Step 5: Solve for x
    x = 5,953,238,997.36/65,013.20
  6. Step 6: Final answer
    x = 91,569.70

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1.5x scale

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.