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Finding the Fourth Proportional to 108,975.60, 150,386.46 and 61,228.92

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Solution

The fourth proportional to 108,975.60, 150,386.46 and 61,228.92 is: 84,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,975.60 : 150,386.46 = 61,228.92 : x
  2. Step 2: Convert to fraction form
    108,975.60/150,386.46 = 61,228.92/x
  3. Step 3: Cross multiply
    108,975.60x = 150,386.46 × 61,228.92
  4. Step 4: Simplify right side
    108,975.60x = 9,208,000,528.42
  5. Step 5: Solve for x
    x = 9,208,000,528.42/108,975.60
  6. Step 6: Final answer
    x = 84,495.98

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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.