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Finding the Fourth Proportional to 6,572,809.80, 9,859,214.70 and 4,978,486.80

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Solution

The fourth proportional to 6,572,809.80, 9,859,214.70 and 4,978,486.80 is: 7,467,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,572,809.80 : 9,859,214.70 = 4,978,486.80 : x
  2. Step 2: Convert to fraction form
    6,572,809.80/9,859,214.70 = 4,978,486.80/x
  3. Step 3: Cross multiply
    6,572,809.80x = 9,859,214.70 × 4,978,486.80
  4. Step 4: Simplify right side
    6,572,809.80x = 49,083,970,242,315.95
  5. Step 5: Solve for x
    x = 49,083,970,242,315.95/6,572,809.80
  6. Step 6: Final answer
    x = 7,467,730.20

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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.