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Finding the Fourth Proportional to 98,385,808.80, 147,667,942.80 and 49,897,394.40

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Solution

The fourth proportional to 98,385,808.80, 147,667,942.80 and 49,897,394.40 is: 74,891,345.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,385,808.80 : 147,667,942.80 = 49,897,394.40 : x
  2. Step 2: Convert to fraction form
    98,385,808.80/147,667,942.80 = 49,897,394.40/x
  3. Step 3: Cross multiply
    98,385,808.80x = 147,667,942.80 × 49,897,394.40
  4. Step 4: Simplify right side
    98,385,808.80x = 7,368,245,582,128,241
  5. Step 5: Solve for x
    x = 7,368,245,582,128,241/98,385,808.80
  6. Step 6: Final answer
    x = 74,891,345.33

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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.