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Finding the Fourth Proportional to 315,556.74, 435,554.01 and 188,237.70

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Solution

The fourth proportional to 315,556.74, 435,554.01 and 188,237.70 is: 259,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,556.74 : 435,554.01 = 188,237.70 : x
  2. Step 2: Convert to fraction form
    315,556.74/435,554.01 = 188,237.70/x
  3. Step 3: Cross multiply
    315,556.74x = 435,554.01 × 188,237.70
  4. Step 4: Simplify right side
    315,556.74x = 81,987,685,068.18
  5. Step 5: Solve for x
    x = 81,987,685,068.18/315,556.74
  6. Step 6: Final answer
    x = 259,819.15

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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.