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Finding the Fourth Proportional to 866,381,036.20, 1,299,571,554.30 and 866,381,036.20

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Solution

The fourth proportional to 866,381,036.20, 1,299,571,554.30 and 866,381,036.20 is: 1,299,571,554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,381,036.20 : 1,299,571,554.30 = 866,381,036.20 : x
  2. Step 2: Convert to fraction form
    866,381,036.20/1,299,571,554.30 = 866,381,036.20/x
  3. Step 3: Cross multiply
    866,381,036.20x = 1,299,571,554.30 × 866,381,036.20
  4. Step 4: Simplify right side
    866,381,036.20x = 1,125,924,149,830,478,592
  5. Step 5: Solve for x
    x = 1,125,924,149,830,478,592/866,381,036.20
  6. Step 6: Final answer
    x = 1,299,571,554.30

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1.5x scale

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.