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Finding the Fourth Proportional to 190,456.80, 285,711.36 and 64,106.88

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Solution

The fourth proportional to 190,456.80, 285,711.36 and 64,106.88 is: 96,169.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,456.80 : 285,711.36 = 64,106.88 : x
  2. Step 2: Convert to fraction form
    190,456.80/285,711.36 = 64,106.88/x
  3. Step 3: Cross multiply
    190,456.80x = 285,711.36 × 64,106.88
  4. Step 4: Simplify right side
    190,456.80x = 18,316,063,870.16
  5. Step 5: Solve for x
    x = 18,316,063,870.16/190,456.80
  6. Step 6: Final answer
    x = 96,169.13

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1.5x scale

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.