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Finding the Fourth Proportional to 106,390.80, 146,818.54 and 58,644.07

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Solution

The fourth proportional to 106,390.80, 146,818.54 and 58,644.07 is: 80,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,390.80 : 146,818.54 = 58,644.07 : x
  2. Step 2: Convert to fraction form
    106,390.80/146,818.54 = 58,644.07/x
  3. Step 3: Cross multiply
    106,390.80x = 146,818.54 × 58,644.07
  4. Step 4: Simplify right side
    106,390.80x = 8,610,036,443.32
  5. Step 5: Solve for x
    x = 8,610,036,443.32/106,390.80
  6. Step 6: Final answer
    x = 80,928.39

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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.