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Finding the Fourth Proportional to 66,992,488.40, 100,488,732.60 and 32,980,264.40

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Solution

The fourth proportional to 66,992,488.40, 100,488,732.60 and 32,980,264.40 is: 49,470,396.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,992,488.40 : 100,488,732.60 = 32,980,264.40 : x
  2. Step 2: Convert to fraction form
    66,992,488.40/100,488,732.60 = 32,980,264.40/x
  3. Step 3: Cross multiply
    66,992,488.40x = 100,488,732.60 × 32,980,264.40
  4. Step 4: Simplify right side
    66,992,488.40x = 3,314,144,970,368,899
  5. Step 5: Solve for x
    x = 3,314,144,970,368,899/66,992,488.40
  6. Step 6: Final answer
    x = 49,470,396.60

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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.