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Finding the Fourth Proportional to 525,515.34, 788,240.16 and 209,745.30

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Solution

The fourth proportional to 525,515.34, 788,240.16 and 209,745.30 is: 314,604.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,515.34 : 788,240.16 = 209,745.30 : x
  2. Step 2: Convert to fraction form
    525,515.34/788,240.16 = 209,745.30/x
  3. Step 3: Cross multiply
    525,515.34x = 788,240.16 × 209,745.30
  4. Step 4: Simplify right side
    525,515.34x = 165,329,668,831.25
  5. Step 5: Solve for x
    x = 165,329,668,831.25/525,515.34
  6. Step 6: Final answer
    x = 314,604.84

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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.