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Finding the Fourth Proportional to 67,442.19, 101,278.10 and 64,620.96

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Solution

The fourth proportional to 67,442.19, 101,278.10 and 64,620.96 is: 97,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,442.19 : 101,278.10 = 64,620.96 : x
  2. Step 2: Convert to fraction form
    67,442.19/101,278.10 = 64,620.96/x
  3. Step 3: Cross multiply
    67,442.19x = 101,278.10 × 64,620.96
  4. Step 4: Simplify right side
    67,442.19x = 6,544,688,048.98
  5. Step 5: Solve for x
    x = 6,544,688,048.98/67,442.19
  6. Step 6: Final answer
    x = 97,041.45

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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.