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Finding the Fourth Proportional to 118,305.82, 163,260.79 and 64,590.67

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Solution

The fourth proportional to 118,305.82, 163,260.79 and 64,590.67 is: 89,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,305.82 : 163,260.79 = 64,590.67 : x
  2. Step 2: Convert to fraction form
    118,305.82/163,260.79 = 64,590.67/x
  3. Step 3: Cross multiply
    118,305.82x = 163,260.79 × 64,590.67
  4. Step 4: Simplify right side
    118,305.82x = 10,545,123,810.83
  5. Step 5: Solve for x
    x = 10,545,123,810.83/118,305.82
  6. Step 6: Final answer
    x = 89,134.45

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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.