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Finding the Fourth Proportional to 2,154,693.82, 2,973,486.48 and 1,187,802.94

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Solution

The fourth proportional to 2,154,693.82, 2,973,486.48 and 1,187,802.94 is: 1,639,173.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,693.82 : 2,973,486.48 = 1,187,802.94 : x
  2. Step 2: Convert to fraction form
    2,154,693.82/2,973,486.48 = 1,187,802.94/x
  3. Step 3: Cross multiply
    2,154,693.82x = 2,973,486.48 × 1,187,802.94
  4. Step 4: Simplify right side
    2,154,693.82x = 3,531,915,982,994.25
  5. Step 5: Solve for x
    x = 3,531,915,982,994.25/2,154,693.82
  6. Step 6: Final answer
    x = 1,639,173.02

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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.