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Finding the Fourth Proportional to 1,692,002.60, 2,334,947.55 and 928,059.20

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Solution

The fourth proportional to 1,692,002.60, 2,334,947.55 and 928,059.20 is: 1,280,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692,002.60 : 2,334,947.55 = 928,059.20 : x
  2. Step 2: Convert to fraction form
    1,692,002.60/2,334,947.55 = 928,059.20/x
  3. Step 3: Cross multiply
    1,692,002.60x = 2,334,947.55 × 928,059.20
  4. Step 4: Simplify right side
    1,692,002.60x = 2,166,969,555,294.96
  5. Step 5: Solve for x
    x = 2,166,969,555,294.96/1,692,002.60
  6. Step 6: Final answer
    x = 1,280,712.90

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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.