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Finding the Fourth Proportional to 525,135.30, 787,411.35 and 209,235.30

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Solution

The fourth proportional to 525,135.30, 787,411.35 and 209,235.30 is: 313,736.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,135.30 : 787,411.35 = 209,235.30 : x
  2. Step 2: Convert to fraction form
    525,135.30/787,411.35 = 209,235.30/x
  3. Step 3: Cross multiply
    525,135.30x = 787,411.35 × 209,235.30
  4. Step 4: Simplify right side
    525,135.30x = 164,754,250,040.66
  5. Step 5: Solve for x
    x = 164,754,250,040.66/525,135.30
  6. Step 6: Final answer
    x = 313,736.76

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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.