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Finding the Fourth Proportional to 127,280.94, 176,028.28 and 111,337.70

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Solution

The fourth proportional to 127,280.94, 176,028.28 and 111,337.70 is: 153,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,280.94 : 176,028.28 = 111,337.70 : x
  2. Step 2: Convert to fraction form
    127,280.94/176,028.28 = 111,337.70/x
  3. Step 3: Cross multiply
    127,280.94x = 176,028.28 × 111,337.70
  4. Step 4: Simplify right side
    127,280.94x = 19,598,583,830.16
  5. Step 5: Solve for x
    x = 19,598,583,830.16/127,280.94
  6. Step 6: Final answer
    x = 153,978.94

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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.