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Finding the Fourth Proportional to 5,260,018.40, 7,890,286.80 and 2,740,594.40

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Solution

The fourth proportional to 5,260,018.40, 7,890,286.80 and 2,740,594.40 is: 4,111,026.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260,018.40 : 7,890,286.80 = 2,740,594.40 : x
  2. Step 2: Convert to fraction form
    5,260,018.40/7,890,286.80 = 2,740,594.40/x
  3. Step 3: Cross multiply
    5,260,018.40x = 7,890,286.80 × 2,740,594.40
  4. Step 4: Simplify right side
    5,260,018.40x = 21,624,075,818,473.92
  5. Step 5: Solve for x
    x = 21,624,075,818,473.92/5,260,018.40
  6. Step 6: Final answer
    x = 4,111,026.65

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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.