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Finding the Fourth Proportional to 115,911.84, 173,922.96 and 56,715.12

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Solution

The fourth proportional to 115,911.84, 173,922.96 and 56,715.12 is: 85,099.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,911.84 : 173,922.96 = 56,715.12 : x
  2. Step 2: Convert to fraction form
    115,911.84/173,922.96 = 56,715.12/x
  3. Step 3: Cross multiply
    115,911.84x = 173,922.96 × 56,715.12
  4. Step 4: Simplify right side
    115,911.84x = 9,864,061,547.16
  5. Step 5: Solve for x
    x = 9,864,061,547.16/115,911.84
  6. Step 6: Final answer
    x = 85,099.69

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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.