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Finding the Fourth Proportional to 782,357.10, 1,078,592.67 and 668,854.91

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Solution

The fourth proportional to 782,357.10, 1,078,592.67 and 668,854.91 is: 922,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,357.10 : 1,078,592.67 = 668,854.91 : x
  2. Step 2: Convert to fraction form
    782,357.10/1,078,592.67 = 668,854.91/x
  3. Step 3: Cross multiply
    782,357.10x = 1,078,592.67 × 668,854.91
  4. Step 4: Simplify right side
    782,357.10x = 721,421,997,826.55
  5. Step 5: Solve for x
    x = 721,421,997,826.55/782,357.10
  6. Step 6: Final answer
    x = 922,113.44

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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.