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Finding the Fourth Proportional to 691,806.60, 1,035,636.30 and 608,862.60

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Solution

The fourth proportional to 691,806.60, 1,035,636.30 and 608,862.60 is: 911,468.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,806.60 : 1,035,636.30 = 608,862.60 : x
  2. Step 2: Convert to fraction form
    691,806.60/1,035,636.30 = 608,862.60/x
  3. Step 3: Cross multiply
    691,806.60x = 1,035,636.30 × 608,862.60
  4. Step 4: Simplify right side
    691,806.60x = 630,560,210,272.38
  5. Step 5: Solve for x
    x = 630,560,210,272.38/691,806.60
  6. Step 6: Final answer
    x = 911,468.91

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1.5x scale

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.