Home / 18,686,538.80-28,029,808.20-18,560,567.60

Finding the Fourth Proportional to 18,686,538.80, 28,029,808.20 and 18,560,567.60

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Solution

The fourth proportional to 18,686,538.80, 28,029,808.20 and 18,560,567.60 is: 27,840,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,538.80 : 28,029,808.20 = 18,560,567.60 : x
  2. Step 2: Convert to fraction form
    18,686,538.80/28,029,808.20 = 18,560,567.60/x
  3. Step 3: Cross multiply
    18,686,538.80x = 28,029,808.20 × 18,560,567.60
  4. Step 4: Simplify right side
    18,686,538.80x = 520,249,149,911,134.38
  5. Step 5: Solve for x
    x = 520,249,149,911,134.38/18,686,538.80
  6. Step 6: Final answer
    x = 27,840,851.40

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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.