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Finding the Fourth Proportional to 60,691,369.80, 91,037,054.70 and 40,284,035.40

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Solution

The fourth proportional to 60,691,369.80, 91,037,054.70 and 40,284,035.40 is: 60,426,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,691,369.80 : 91,037,054.70 = 40,284,035.40 : x
  2. Step 2: Convert to fraction form
    60,691,369.80/91,037,054.70 = 40,284,035.40/x
  3. Step 3: Cross multiply
    60,691,369.80x = 91,037,054.70 × 40,284,035.40
  4. Step 4: Simplify right side
    60,691,369.80x = 3,667,339,934,246,536.50
  5. Step 5: Solve for x
    x = 3,667,339,934,246,536.50/60,691,369.80
  6. Step 6: Final answer
    x = 60,426,053.10

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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.