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Finding the Fourth Proportional to 115,901.70, 173,852.55 and 74,429.70

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Solution

The fourth proportional to 115,901.70, 173,852.55 and 74,429.70 is: 111,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,901.70 : 173,852.55 = 74,429.70 : x
  2. Step 2: Convert to fraction form
    115,901.70/173,852.55 = 74,429.70/x
  3. Step 3: Cross multiply
    115,901.70x = 173,852.55 × 74,429.70
  4. Step 4: Simplify right side
    115,901.70x = 12,939,793,140.74
  5. Step 5: Solve for x
    x = 12,939,793,140.74/115,901.70
  6. Step 6: Final answer
    x = 111,644.55

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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.