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Finding the Fourth Proportional to 383,289.60, 525,108.64 and 368,923.98

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Solution

The fourth proportional to 383,289.60, 525,108.64 and 368,923.98 is: 505,427.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,289.60 : 525,108.64 = 368,923.98 : x
  2. Step 2: Convert to fraction form
    383,289.60/525,108.64 = 368,923.98/x
  3. Step 3: Cross multiply
    383,289.60x = 525,108.64 × 368,923.98
  4. Step 4: Simplify right side
    383,289.60x = 193,725,169,401.19
  5. Step 5: Solve for x
    x = 193,725,169,401.19/383,289.60
  6. Step 6: Final answer
    x = 505,427.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.