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Finding the Fourth Proportional to 97,238, 145,900.92 and 55,685

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Solution

The fourth proportional to 97,238, 145,900.92 and 55,685 is: 83,552.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,238 : 145,900.92 = 55,685 : x
  2. Step 2: Convert to fraction form
    97,238/145,900.92 = 55,685/x
  3. Step 3: Cross multiply
    97,238x = 145,900.92 × 55,685
  4. Step 4: Simplify right side
    97,238x = 8,124,492,730.20
  5. Step 5: Solve for x
    x = 8,124,492,730.20/97,238
  6. Step 6: Final answer
    x = 83,552.65

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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.