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Finding the Fourth Proportional to 784,943,998.80, 1,174,865,081.40 and 784,943,998.80

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Solution

The fourth proportional to 784,943,998.80, 1,174,865,081.40 and 784,943,998.80 is: 1,174,865,081.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,943,998.80 : 1,174,865,081.40 = 784,943,998.80 : x
  2. Step 2: Convert to fraction form
    784,943,998.80/1,174,865,081.40 = 784,943,998.80/x
  3. Step 3: Cross multiply
    784,943,998.80x = 1,174,865,081.40 × 784,943,998.80
  4. Step 4: Simplify right side
    784,943,998.80x = 922,203,295,044,603,520
  5. Step 5: Solve for x
    x = 922,203,295,044,603,520/784,943,998.80
  6. Step 6: Final answer
    x = 1,174,865,081.40

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Double scale
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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.