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Finding the Fourth Proportional to 8,868,728.90, 13,305,061.65 and 4,075,262.30

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Solution

The fourth proportional to 8,868,728.90, 13,305,061.65 and 4,075,262.30 is: 6,113,797.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868,728.90 : 13,305,061.65 = 4,075,262.30 : x
  2. Step 2: Convert to fraction form
    8,868,728.90/13,305,061.65 = 4,075,262.30/x
  3. Step 3: Cross multiply
    8,868,728.90x = 13,305,061.65 × 4,075,262.30
  4. Step 4: Simplify right side
    8,868,728.90x = 54,221,616,141,420.80
  5. Step 5: Solve for x
    x = 54,221,616,141,420.80/8,868,728.90
  6. Step 6: Final answer
    x = 6,113,797.90

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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.