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Finding the Fourth Proportional to 405,966.70, 609,036.45 and 125,512.30

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Solution

The fourth proportional to 405,966.70, 609,036.45 and 125,512.30 is: 188,295.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,966.70 : 609,036.45 = 125,512.30 : x
  2. Step 2: Convert to fraction form
    405,966.70/609,036.45 = 125,512.30/x
  3. Step 3: Cross multiply
    405,966.70x = 609,036.45 × 125,512.30
  4. Step 4: Simplify right side
    405,966.70x = 76,441,565,623.34
  5. Step 5: Solve for x
    x = 76,441,565,623.34/405,966.70
  6. Step 6: Final answer
    x = 188,295.16

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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.