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Finding the Fourth Proportional to 636,826.90, 878,946.61 and 365,077.11

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Solution

The fourth proportional to 636,826.90, 878,946.61 and 365,077.11 is: 503,878.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,826.90 : 878,946.61 = 365,077.11 : x
  2. Step 2: Convert to fraction form
    636,826.90/878,946.61 = 365,077.11/x
  3. Step 3: Cross multiply
    636,826.90x = 878,946.61 × 365,077.11
  4. Step 4: Simplify right side
    636,826.90x = 320,883,288,223.10
  5. Step 5: Solve for x
    x = 320,883,288,223.10/636,826.90
  6. Step 6: Final answer
    x = 503,878.35

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1.5x scale

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.