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Finding the Fourth Proportional to 219,210.40, 307,205.60 and 219,210.40

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Solution

The fourth proportional to 219,210.40, 307,205.60 and 219,210.40 is: 307,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,210.40 : 307,205.60 = 219,210.40 : x
  2. Step 2: Convert to fraction form
    219,210.40/307,205.60 = 219,210.40/x
  3. Step 3: Cross multiply
    219,210.40x = 307,205.60 × 219,210.40
  4. Step 4: Simplify right side
    219,210.40x = 67,342,662,458.24
  5. Step 5: Solve for x
    x = 67,342,662,458.24/219,210.40
  6. Step 6: Final answer
    x = 307,205.60

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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.