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Finding the Fourth Proportional to 8,891,812.70, 12,482,130.10 and 8,891,812.70

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Solution

The fourth proportional to 8,891,812.70, 12,482,130.10 and 8,891,812.70 is: 12,482,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891,812.70 : 12,482,130.10 = 8,891,812.70 : x
  2. Step 2: Convert to fraction form
    8,891,812.70/12,482,130.10 = 8,891,812.70/x
  3. Step 3: Cross multiply
    8,891,812.70x = 12,482,130.10 × 8,891,812.70
  4. Step 4: Simplify right side
    8,891,812.70x = 110,988,762,946,232.25
  5. Step 5: Solve for x
    x = 110,988,762,946,232.25/8,891,812.70
  6. Step 6: Final answer
    x = 12,482,130.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.