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Finding the Fourth Proportional to 1,026,919.92, 1,539,815.88 and 316,750.80

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Solution

The fourth proportional to 1,026,919.92, 1,539,815.88 and 316,750.80 is: 474,952.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026,919.92 : 1,539,815.88 = 316,750.80 : x
  2. Step 2: Convert to fraction form
    1,026,919.92/1,539,815.88 = 316,750.80/x
  3. Step 3: Cross multiply
    1,026,919.92x = 1,539,815.88 × 316,750.80
  4. Step 4: Simplify right side
    1,026,919.92x = 487,737,911,842.70
  5. Step 5: Solve for x
    x = 487,737,911,842.70/1,026,919.92
  6. Step 6: Final answer
    x = 474,952.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.