Home / 28,082,811.60-42,124,217.40-18,509,000.40

Finding the Fourth Proportional to 28,082,811.60, 42,124,217.40 and 18,509,000.40

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Solution

The fourth proportional to 28,082,811.60, 42,124,217.40 and 18,509,000.40 is: 27,763,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082,811.60 : 42,124,217.40 = 18,509,000.40 : x
  2. Step 2: Convert to fraction form
    28,082,811.60/42,124,217.40 = 18,509,000.40/x
  3. Step 3: Cross multiply
    28,082,811.60x = 42,124,217.40 × 18,509,000.40
  4. Step 4: Simplify right side
    28,082,811.60x = 779,677,156,706,286.88
  5. Step 5: Solve for x
    x = 779,677,156,706,286.88/28,082,811.60
  6. Step 6: Final answer
    x = 27,763,500.60

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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.