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Finding the Fourth Proportional to 66,173,090.60, 99,259,635.90 and 20,114,870.60

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Solution

The fourth proportional to 66,173,090.60, 99,259,635.90 and 20,114,870.60 is: 30,172,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,173,090.60 : 99,259,635.90 = 20,114,870.60 : x
  2. Step 2: Convert to fraction form
    66,173,090.60/99,259,635.90 = 20,114,870.60/x
  3. Step 3: Cross multiply
    66,173,090.60x = 99,259,635.90 × 20,114,870.60
  4. Step 4: Simplify right side
    66,173,090.60x = 1,996,594,731,931,614.75
  5. Step 5: Solve for x
    x = 1,996,594,731,931,614.75/66,173,090.60
  6. Step 6: Final answer
    x = 30,172,305.90

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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.