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Finding the Fourth Proportional to 25,900,613.60, 38,861,806.80 and 13,919,352.80

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Solution

The fourth proportional to 25,900,613.60, 38,861,806.80 and 13,919,352.80 is: 20,884,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,900,613.60 : 38,861,806.80 = 13,919,352.80 : x
  2. Step 2: Convert to fraction form
    25,900,613.60/38,861,806.80 = 13,919,352.80/x
  3. Step 3: Cross multiply
    25,900,613.60x = 38,861,806.80 × 13,919,352.80
  4. Step 4: Simplify right side
    25,900,613.60x = 540,931,199,294,639
  5. Step 5: Solve for x
    x = 540,931,199,294,639/25,900,613.60
  6. Step 6: Final answer
    x = 20,884,879.70

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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.