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Finding the Fourth Proportional to 80,762.63, 121,148.80 and 25,358.63

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Solution

The fourth proportional to 80,762.63, 121,148.80 and 25,358.63 is: 38,039.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,762.63 : 121,148.80 = 25,358.63 : x
  2. Step 2: Convert to fraction form
    80,762.63/121,148.80 = 25,358.63/x
  3. Step 3: Cross multiply
    80,762.63x = 121,148.80 × 25,358.63
  4. Step 4: Simplify right side
    80,762.63x = 3,072,166,925.00
  5. Step 5: Solve for x
    x = 3,072,166,925.00/80,762.63
  6. Step 6: Final answer
    x = 38,039.46

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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.