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Finding the Fourth Proportional to 1,929,561.54, 2,662,958.34 and 1,070,398.50

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Solution

The fourth proportional to 1,929,561.54, 2,662,958.34 and 1,070,398.50 is: 1,477,240.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929,561.54 : 2,662,958.34 = 1,070,398.50 : x
  2. Step 2: Convert to fraction form
    1,929,561.54/2,662,958.34 = 1,070,398.50/x
  3. Step 3: Cross multiply
    1,929,561.54x = 2,662,958.34 × 1,070,398.50
  4. Step 4: Simplify right side
    1,929,561.54x = 2,850,426,612,698.49
  5. Step 5: Solve for x
    x = 2,850,426,612,698.49/1,929,561.54
  6. Step 6: Final answer
    x = 1,477,240.58

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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.