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Finding the Fourth Proportional to 201,108.64, 277,522.32 and 111,690.40

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Solution

The fourth proportional to 201,108.64, 277,522.32 and 111,690.40 is: 154,128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,108.64 : 277,522.32 = 111,690.40 : x
  2. Step 2: Convert to fraction form
    201,108.64/277,522.32 = 111,690.40/x
  3. Step 3: Cross multiply
    201,108.64x = 277,522.32 × 111,690.40
  4. Step 4: Simplify right side
    201,108.64x = 30,996,578,929.73
  5. Step 5: Solve for x
    x = 30,996,578,929.73/201,108.64
  6. Step 6: Final answer
    x = 154,128.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.