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Finding the Fourth Proportional to 139,943,459.06, 193,191,891.02 and 87,037,219.88

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Solution

The fourth proportional to 139,943,459.06, 193,191,891.02 and 87,037,219.88 is: 120,154,848.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,943,459.06 : 193,191,891.02 = 87,037,219.88 : x
  2. Step 2: Convert to fraction form
    139,943,459.06/193,191,891.02 = 87,037,219.88/x
  3. Step 3: Cross multiply
    139,943,459.06x = 193,191,891.02 × 87,037,219.88
  4. Step 4: Simplify right side
    139,943,459.06x = 16,814,885,096,339,590
  5. Step 5: Solve for x
    x = 16,814,885,096,339,590/139,943,459.06
  6. Step 6: Final answer
    x = 120,154,848.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.