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Finding the Fourth Proportional to 8,802,156.80, 13,187,488.80 and 7,447,966.40

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Solution

The fourth proportional to 8,802,156.80, 13,187,488.80 and 7,447,966.40 is: 11,158,625.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802,156.80 : 13,187,488.80 = 7,447,966.40 : x
  2. Step 2: Convert to fraction form
    8,802,156.80/13,187,488.80 = 7,447,966.40/x
  3. Step 3: Cross multiply
    8,802,156.80x = 13,187,488.80 × 7,447,966.40
  4. Step 4: Simplify right side
    8,802,156.80x = 98,219,973,482,776.33
  5. Step 5: Solve for x
    x = 98,219,973,482,776.33/8,802,156.80
  6. Step 6: Final answer
    x = 11,158,625.75

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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.