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Finding the Fourth Proportional to 961,161,661.60, 1,348,687,426.40 and 961,161,661.60

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Solution

The fourth proportional to 961,161,661.60, 1,348,687,426.40 and 961,161,661.60 is: 1,348,687,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,161,661.60 : 1,348,687,426.40 = 961,161,661.60 : x
  2. Step 2: Convert to fraction form
    961,161,661.60/1,348,687,426.40 = 961,161,661.60/x
  3. Step 3: Cross multiply
    961,161,661.60x = 1,348,687,426.40 × 961,161,661.60
  4. Step 4: Simplify right side
    961,161,661.60x = 1,296,306,647,737,651,712
  5. Step 5: Solve for x
    x = 1,296,306,647,737,651,712/961,161,661.60
  6. Step 6: Final answer
    x = 1,348,687,426.40

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1.5x scale

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.