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Finding the Fourth Proportional to 70,364,942.98, 105,595,098.67 and 28,873,320.38

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Solution

The fourth proportional to 70,364,942.98, 105,595,098.67 and 28,873,320.38 is: 43,329,547.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,364,942.98 : 105,595,098.67 = 28,873,320.38 : x
  2. Step 2: Convert to fraction form
    70,364,942.98/105,595,098.67 = 28,873,320.38/x
  3. Step 3: Cross multiply
    70,364,942.98x = 105,595,098.67 × 28,873,320.38
  4. Step 4: Simplify right side
    70,364,942.98x = 3,048,881,114,538,891.50
  5. Step 5: Solve for x
    x = 3,048,881,114,538,891.50/70,364,942.98
  6. Step 6: Final answer
    x = 43,329,547.15

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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.