Home / 18,695,779.20-28,043,668.80-10,605,628.80

Finding the Fourth Proportional to 18,695,779.20, 28,043,668.80 and 10,605,628.80

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Solution

The fourth proportional to 18,695,779.20, 28,043,668.80 and 10,605,628.80 is: 15,908,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695,779.20 : 28,043,668.80 = 10,605,628.80 : x
  2. Step 2: Convert to fraction form
    18,695,779.20/28,043,668.80 = 10,605,628.80/x
  3. Step 3: Cross multiply
    18,695,779.20x = 28,043,668.80 × 10,605,628.80
  4. Step 4: Simplify right side
    18,695,779.20x = 297,420,741,482,941.50
  5. Step 5: Solve for x
    x = 297,420,741,482,941.50/18,695,779.20
  6. Step 6: Final answer
    x = 15,908,443.20

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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.