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Finding the Fourth Proportional to 219,063.90, 302,308.50 and 118,461.90

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Solution

The fourth proportional to 219,063.90, 302,308.50 and 118,461.90 is: 163,477.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,063.90 : 302,308.50 = 118,461.90 : x
  2. Step 2: Convert to fraction form
    219,063.90/302,308.50 = 118,461.90/x
  3. Step 3: Cross multiply
    219,063.90x = 302,308.50 × 118,461.90
  4. Step 4: Simplify right side
    219,063.90x = 35,812,039,296.15
  5. Step 5: Solve for x
    x = 35,812,039,296.15/219,063.90
  6. Step 6: Final answer
    x = 163,477.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.