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Finding the Fourth Proportional to 8,869,661.80, 13,304,492.70 and 6,956,474.20

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Solution

The fourth proportional to 8,869,661.80, 13,304,492.70 and 6,956,474.20 is: 10,434,711.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869,661.80 : 13,304,492.70 = 6,956,474.20 : x
  2. Step 2: Convert to fraction form
    8,869,661.80/13,304,492.70 = 6,956,474.20/x
  3. Step 3: Cross multiply
    8,869,661.80x = 13,304,492.70 × 6,956,474.20
  4. Step 4: Simplify right side
    8,869,661.80x = 92,552,360,211,638.34
  5. Step 5: Solve for x
    x = 92,552,360,211,638.34/8,869,661.80
  6. Step 6: Final answer
    x = 10,434,711.30

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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.