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Finding the Fourth Proportional to 28,364,794.80, 42,554,795.40 and 11,337,428.40

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Solution

The fourth proportional to 28,364,794.80, 42,554,795.40 and 11,337,428.40 is: 17,009,181.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364,794.80 : 42,554,795.40 = 11,337,428.40 : x
  2. Step 2: Convert to fraction form
    28,364,794.80/42,554,795.40 = 11,337,428.40/x
  3. Step 3: Cross multiply
    28,364,794.80x = 42,554,795.40 × 11,337,428.40
  4. Step 4: Simplify right side
    28,364,794.80x = 482,461,945,924,149.38
  5. Step 5: Solve for x
    x = 482,461,945,924,149.38/28,364,794.80
  6. Step 6: Final answer
    x = 17,009,181.60

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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.