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Finding the Fourth Proportional to 219,210.90, 307,206.30 and 219,210.90

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Solution

The fourth proportional to 219,210.90, 307,206.30 and 219,210.90 is: 307,206.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,210.90 : 307,206.30 = 219,210.90 : x
  2. Step 2: Convert to fraction form
    219,210.90/307,206.30 = 219,210.90/x
  3. Step 3: Cross multiply
    219,210.90x = 307,206.30 × 219,210.90
  4. Step 4: Simplify right side
    219,210.90x = 67,342,969,508.67
  5. Step 5: Solve for x
    x = 67,342,969,508.67/219,210.90
  6. Step 6: Final answer
    x = 307,206.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.