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Finding the Fourth Proportional to 66,048,799.80, 98,978,721.30 and 48,641,154.60

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Solution

The fourth proportional to 66,048,799.80, 98,978,721.30 and 48,641,154.60 is: 72,892,153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,048,799.80 : 98,978,721.30 = 48,641,154.60 : x
  2. Step 2: Convert to fraction form
    66,048,799.80/98,978,721.30 = 48,641,154.60/x
  3. Step 3: Cross multiply
    66,048,799.80x = 98,978,721.30 × 48,641,154.60
  4. Step 4: Simplify right side
    66,048,799.80x = 4,814,439,284,863,613
  5. Step 5: Solve for x
    x = 4,814,439,284,863,613/66,048,799.80
  6. Step 6: Final answer
    x = 72,892,153.97

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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.