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Finding the Fourth Proportional to 1,196,962, 1,651,807.60 and 660,418

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Solution

The fourth proportional to 1,196,962, 1,651,807.60 and 660,418 is: 911,376.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196,962 : 1,651,807.60 = 660,418 : x
  2. Step 2: Convert to fraction form
    1,196,962/1,651,807.60 = 660,418/x
  3. Step 3: Cross multiply
    1,196,962x = 1,651,807.60 × 660,418
  4. Step 4: Simplify right side
    1,196,962x = 1,090,883,471,576.80
  5. Step 5: Solve for x
    x = 1,090,883,471,576.80/1,196,962
  6. Step 6: Final answer
    x = 911,376.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.