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Finding the Fourth Proportional to 137,386.80, 189,600.92 and 76,953.92

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Solution

The fourth proportional to 137,386.80, 189,600.92 and 76,953.92 is: 106,200.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,386.80 : 189,600.92 = 76,953.92 : x
  2. Step 2: Convert to fraction form
    137,386.80/189,600.92 = 76,953.92/x
  3. Step 3: Cross multiply
    137,386.80x = 189,600.92 × 76,953.92
  4. Step 4: Simplify right side
    137,386.80x = 14,590,534,029.61
  5. Step 5: Solve for x
    x = 14,590,534,029.61/137,386.80
  6. Step 6: Final answer
    x = 106,200.41

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1.5x scale

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.