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Finding the Fourth Proportional to 1,295,471.88, 1,788,631.80 and 837,693.90

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Solution

The fourth proportional to 1,295,471.88, 1,788,631.80 and 837,693.90 is: 1,156,587.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,471.88 : 1,788,631.80 = 837,693.90 : x
  2. Step 2: Convert to fraction form
    1,295,471.88/1,788,631.80 = 837,693.90/x
  3. Step 3: Cross multiply
    1,295,471.88x = 1,788,631.80 × 837,693.90
  4. Step 4: Simplify right side
    1,295,471.88x = 1,498,325,948,206.02
  5. Step 5: Solve for x
    x = 1,498,325,948,206.02/1,295,471.88
  6. Step 6: Final answer
    x = 1,156,587.01

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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.