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Finding the Fourth Proportional to 108,143, 162,214.54 and 29,263.40

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Solution

The fourth proportional to 108,143, 162,214.54 and 29,263.40 is: 43,895.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,143 : 162,214.54 = 29,263.40 : x
  2. Step 2: Convert to fraction form
    108,143/162,214.54 = 29,263.40/x
  3. Step 3: Cross multiply
    108,143x = 162,214.54 × 29,263.40
  4. Step 4: Simplify right side
    108,143x = 4,746,948,969.84
  5. Step 5: Solve for x
    x = 4,746,948,969.84/108,143
  6. Step 6: Final answer
    x = 43,895.11

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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.