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Finding the Fourth Proportional to 28,600,219.28, 42,900,328.91 and 28,600,219.28

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Solution

The fourth proportional to 28,600,219.28, 42,900,328.91 and 28,600,219.28 is: 42,900,328.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,600,219.28 : 42,900,328.91 = 28,600,219.28 : x
  2. Step 2: Convert to fraction form
    28,600,219.28/42,900,328.91 = 28,600,219.28/x
  3. Step 3: Cross multiply
    28,600,219.28x = 42,900,328.91 × 28,600,219.28
  4. Step 4: Simplify right side
    28,600,219.28x = 1,226,958,813,867,122.25
  5. Step 5: Solve for x
    x = 1,226,958,813,867,122.25/28,600,219.28
  6. Step 6: Final answer
    x = 42,900,328.91

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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.