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Finding the Fourth Proportional to 328,657.28, 492,985.94 and 107,041.28

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Solution

The fourth proportional to 328,657.28, 492,985.94 and 107,041.28 is: 160,561.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,657.28 : 492,985.94 = 107,041.28 : x
  2. Step 2: Convert to fraction form
    328,657.28/492,985.94 = 107,041.28/x
  3. Step 3: Cross multiply
    328,657.28x = 492,985.94 × 107,041.28
  4. Step 4: Simplify right side
    328,657.28x = 52,769,846,039.60
  5. Step 5: Solve for x
    x = 52,769,846,039.60/328,657.28
  6. Step 6: Final answer
    x = 160,561.93

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Similar ratio
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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.