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Finding the Fourth Proportional to 293,166,899.92, 439,749,978.51 and 74,817,246.90

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Solution

The fourth proportional to 293,166,899.92, 439,749,978.51 and 74,817,246.90 is: 112,225,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,166,899.92 : 439,749,978.51 = 74,817,246.90 : x
  2. Step 2: Convert to fraction form
    293,166,899.92/439,749,978.51 = 74,817,246.90/x
  3. Step 3: Cross multiply
    293,166,899.92x = 439,749,978.51 × 74,817,246.90
  4. Step 4: Simplify right side
    293,166,899.92x = 32,900,882,716,452,368
  5. Step 5: Solve for x
    x = 32,900,882,716,452,368/293,166,899.92
  6. Step 6: Final answer
    x = 112,225,775.58

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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.