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Finding the Fourth Proportional to 9,966,554.40, 14,966,420.40 and 5,482,048.80

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Solution

The fourth proportional to 9,966,554.40, 14,966,420.40 and 5,482,048.80 is: 8,232,197.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966,554.40 : 14,966,420.40 = 5,482,048.80 : x
  2. Step 2: Convert to fraction form
    9,966,554.40/14,966,420.40 = 5,482,048.80/x
  3. Step 3: Cross multiply
    9,966,554.40x = 14,966,420.40 × 5,482,048.80
  4. Step 4: Simplify right side
    9,966,554.40x = 82,046,646,994,115.52
  5. Step 5: Solve for x
    x = 82,046,646,994,115.52/9,966,554.40
  6. Step 6: Final answer
    x = 8,232,197.78

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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.