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Finding the Fourth Proportional to 66,494,927.20, 99,574,429.20 and 43,652,149.60

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Solution

The fourth proportional to 66,494,927.20, 99,574,429.20 and 43,652,149.60 is: 65,367,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,494,927.20 : 99,574,429.20 = 43,652,149.60 : x
  2. Step 2: Convert to fraction form
    66,494,927.20/99,574,429.20 = 43,652,149.60/x
  3. Step 3: Cross multiply
    66,494,927.20x = 99,574,429.20 × 43,652,149.60
  4. Step 4: Simplify right side
    66,494,927.20x = 4,346,637,879,773,008.50
  5. Step 5: Solve for x
    x = 4,346,637,879,773,008.50/66,494,927.20
  6. Step 6: Final answer
    x = 65,367,962.08

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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.