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Finding the Fourth Proportional to 12,586,761,720.60, 18,843,862,875.30 and 12,586,761,720.60

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Solution

The fourth proportional to 12,586,761,720.60, 18,843,862,875.30 and 12,586,761,720.60 is: 18,843,862,875.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586,761,720.60 : 18,843,862,875.30 = 12,586,761,720.60 : x
  2. Step 2: Convert to fraction form
    12,586,761,720.60/18,843,862,875.30 = 12,586,761,720.60/x
  3. Step 3: Cross multiply
    12,586,761,720.60x = 18,843,862,875.30 × 12,586,761,720.60
  4. Step 4: Simplify right side
    12,586,761,720.60x = 237,183,211,907,061,481,472
  5. Step 5: Solve for x
    x = 237,183,211,907,061,481,472/12,586,761,720.60
  6. Step 6: Final answer
    x = 18,843,862,875.30

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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.