Home / 12,352,140.80-18,528,211.20-11,512,332.80

Finding the Fourth Proportional to 12,352,140.80, 18,528,211.20 and 11,512,332.80

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Solution

The fourth proportional to 12,352,140.80, 18,528,211.20 and 11,512,332.80 is: 17,268,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,352,140.80 : 18,528,211.20 = 11,512,332.80 : x
  2. Step 2: Convert to fraction form
    12,352,140.80/18,528,211.20 = 11,512,332.80/x
  3. Step 3: Cross multiply
    12,352,140.80x = 18,528,211.20 × 11,512,332.80
  4. Step 4: Simplify right side
    12,352,140.80x = 213,302,933,523,087.38
  5. Step 5: Solve for x
    x = 213,302,933,523,087.38/12,352,140.80
  6. Step 6: Final answer
    x = 17,268,499.20

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Similar ratio
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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.