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Finding the Fourth Proportional to 118,713.42, 163,828.62 and 64,998.84

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Solution

The fourth proportional to 118,713.42, 163,828.62 and 64,998.84 is: 89,700.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,713.42 : 163,828.62 = 64,998.84 : x
  2. Step 2: Convert to fraction form
    118,713.42/163,828.62 = 64,998.84/x
  3. Step 3: Cross multiply
    118,713.42x = 163,828.62 × 64,998.84
  4. Step 4: Simplify right side
    118,713.42x = 10,648,670,258.80
  5. Step 5: Solve for x
    x = 10,648,670,258.80/118,713.42
  6. Step 6: Final answer
    x = 89,700.64

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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.