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Finding the Third Proportional to 47,688.75 and 70,146

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Solution

The third proportional to 47,688.75 and 70,146 is: 103,178.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,688.75 : 70,146 = 70,146 : x
  2. Step 2: Convert to fraction form
    47,688.75/70,146 = 70,146/x
  3. Step 3: Cross multiply
    47,688.75x = 70,146 × 70,146
  4. Step 4: Simplify right side
    47,688.75x = 4,920,461,316
  5. Step 5: Solve for x
    x = 4,920,461,316/47,688.75
  6. Step 6: Final answer
    x = 103,178.66

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.