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Finding the Fourth Proportional to 1,696,962.90, 2,341,759.48 and 961,985.32

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Solution

The fourth proportional to 1,696,962.90, 2,341,759.48 and 961,985.32 is: 1,327,511.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,696,962.90 : 2,341,759.48 = 961,985.32 : x
  2. Step 2: Convert to fraction form
    1,696,962.90/2,341,759.48 = 961,985.32/x
  3. Step 3: Cross multiply
    1,696,962.90x = 2,341,759.48 × 961,985.32
  4. Step 4: Simplify right side
    1,696,962.90x = 2,252,738,242,730.83
  5. Step 5: Solve for x
    x = 2,252,738,242,730.83/1,696,962.90
  6. Step 6: Final answer
    x = 1,327,511.78

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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.