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Finding the Fourth Proportional to 6,240,619.80, 8,755,763.40 and 6,240,619.80

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Solution

The fourth proportional to 6,240,619.80, 8,755,763.40 and 6,240,619.80 is: 8,755,763.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240,619.80 : 8,755,763.40 = 6,240,619.80 : x
  2. Step 2: Convert to fraction form
    6,240,619.80/8,755,763.40 = 6,240,619.80/x
  3. Step 3: Cross multiply
    6,240,619.80x = 8,755,763.40 × 6,240,619.80
  4. Step 4: Simplify right side
    6,240,619.80x = 54,641,390,438,155.32
  5. Step 5: Solve for x
    x = 54,641,390,438,155.32/6,240,619.80
  6. Step 6: Final answer
    x = 8,755,763.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.