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Finding the Fourth Proportional to 190,753.76, 286,130.78 and 66,094.76

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Solution

The fourth proportional to 190,753.76, 286,130.78 and 66,094.76 is: 99,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,753.76 : 286,130.78 = 66,094.76 : x
  2. Step 2: Convert to fraction form
    190,753.76/286,130.78 = 66,094.76/x
  3. Step 3: Cross multiply
    190,753.76x = 286,130.78 × 66,094.76
  4. Step 4: Simplify right side
    190,753.76x = 18,911,745,232.71
  5. Step 5: Solve for x
    x = 18,911,745,232.71/190,753.76
  6. Step 6: Final answer
    x = 99,142.19

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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.