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Finding the Fourth Proportional to 153,355.53, 211,640.30 and 92,931.46

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Solution

The fourth proportional to 153,355.53, 211,640.30 and 92,931.46 is: 128,251.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,355.53 : 211,640.30 = 92,931.46 : x
  2. Step 2: Convert to fraction form
    153,355.53/211,640.30 = 92,931.46/x
  3. Step 3: Cross multiply
    153,355.53x = 211,640.30 × 92,931.46
  4. Step 4: Simplify right side
    153,355.53x = 19,668,042,073.84
  5. Step 5: Solve for x
    x = 19,668,042,073.84/153,355.53
  6. Step 6: Final answer
    x = 128,251.27

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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.