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Finding the Fourth Proportional to 111,455,985.60, 167,183,978.40 and 99,551,707.20

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Solution

The fourth proportional to 111,455,985.60, 167,183,978.40 and 99,551,707.20 is: 149,327,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,455,985.60 : 167,183,978.40 = 99,551,707.20 : x
  2. Step 2: Convert to fraction form
    111,455,985.60/167,183,978.40 = 99,551,707.20/x
  3. Step 3: Cross multiply
    111,455,985.60x = 167,183,978.40 × 99,551,707.20
  4. Step 4: Simplify right side
    111,455,985.60x = 16,643,450,466,207,926
  5. Step 5: Solve for x
    x = 16,643,450,466,207,926/111,455,985.60
  6. Step 6: Final answer
    x = 149,327,560.80

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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.