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Finding the Fourth Proportional to 191,062.40, 286,599.97 and 85,881.67

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Solution

The fourth proportional to 191,062.40, 286,599.97 and 85,881.67 is: 128,825.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,062.40 : 286,599.97 = 85,881.67 : x
  2. Step 2: Convert to fraction form
    191,062.40/286,599.97 = 85,881.67/x
  3. Step 3: Cross multiply
    191,062.40x = 286,599.97 × 85,881.67
  4. Step 4: Simplify right side
    191,062.40x = 24,613,683,436.40
  5. Step 5: Solve for x
    x = 24,613,683,436.40/191,062.40
  6. Step 6: Final answer
    x = 128,825.37

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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.