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Finding the Fourth Proportional to 5,164,570.80, 7,747,801.86 and 2,130,281.37

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Solution

The fourth proportional to 5,164,570.80, 7,747,801.86 and 2,130,281.37 is: 3,195,812.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164,570.80 : 7,747,801.86 = 2,130,281.37 : x
  2. Step 2: Convert to fraction form
    5,164,570.80/7,747,801.86 = 2,130,281.37/x
  3. Step 3: Cross multiply
    5,164,570.80x = 7,747,801.86 × 2,130,281.37
  4. Step 4: Simplify right side
    5,164,570.80x = 16,504,997,960,809.35
  5. Step 5: Solve for x
    x = 16,504,997,960,809.35/5,164,570.80
  6. Step 6: Final answer
    x = 3,195,812.12

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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.