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Finding the Fourth Proportional to 191,516.04, 287,405.28 and 66,857.04

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Solution

The fourth proportional to 191,516.04, 287,405.28 and 66,857.04 is: 100,331.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,516.04 : 287,405.28 = 66,857.04 : x
  2. Step 2: Convert to fraction form
    191,516.04/287,405.28 = 66,857.04/x
  3. Step 3: Cross multiply
    191,516.04x = 287,405.28 × 66,857.04
  4. Step 4: Simplify right side
    191,516.04x = 19,215,066,301.17
  5. Step 5: Solve for x
    x = 19,215,066,301.17/191,516.04
  6. Step 6: Final answer
    x = 100,331.37

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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.