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Finding the Fourth Proportional to 7,830.98, 10,806.62 and 4,294.11

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Solution

The fourth proportional to 7,830.98, 10,806.62 and 4,294.11 is: 5,925.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.98 : 10,806.62 = 4,294.11 : x
  2. Step 2: Convert to fraction form
    7,830.98/10,806.62 = 4,294.11/x
  3. Step 3: Cross multiply
    7,830.98x = 10,806.62 × 4,294.11
  4. Step 4: Simplify right side
    7,830.98x = 46,404,834.06
  5. Step 5: Solve for x
    x = 46,404,834.06/7,830.98
  6. Step 6: Final answer
    x = 5,925.80

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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.