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Finding the Fourth Proportional to 852,984,883.40, 1,279,477,325.10 and 698,016,687.80

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Solution

The fourth proportional to 852,984,883.40, 1,279,477,325.10 and 698,016,687.80 is: 1,047,025,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,984,883.40 : 1,279,477,325.10 = 698,016,687.80 : x
  2. Step 2: Convert to fraction form
    852,984,883.40/1,279,477,325.10 = 698,016,687.80/x
  3. Step 3: Cross multiply
    852,984,883.40x = 1,279,477,325.10 × 698,016,687.80
  4. Step 4: Simplify right side
    852,984,883.40x = 893,096,524,581,505,664
  5. Step 5: Solve for x
    x = 893,096,524,581,505,664/852,984,883.40
  6. Step 6: Final answer
    x = 1,047,025,031.70

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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.