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Finding the Fourth Proportional to 898,641,317.80, 1,347,961,976.70 and 735,382,642.60

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Solution

The fourth proportional to 898,641,317.80, 1,347,961,976.70 and 735,382,642.60 is: 1,103,073,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,641,317.80 : 1,347,961,976.70 = 735,382,642.60 : x
  2. Step 2: Convert to fraction form
    898,641,317.80/1,347,961,976.70 = 735,382,642.60/x
  3. Step 3: Cross multiply
    898,641,317.80x = 1,347,961,976.70 × 735,382,642.60
  4. Step 4: Simplify right side
    898,641,317.80x = 991,267,840,549,965,696
  5. Step 5: Solve for x
    x = 991,267,840,549,965,696/898,641,317.80
  6. Step 6: Final answer
    x = 1,103,073,963.90

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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.