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Finding the Fourth Proportional to 857,598.80, 1,183,408.80 and 475,624.40

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Solution

The fourth proportional to 857,598.80, 1,183,408.80 and 475,624.40 is: 656,318.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,598.80 : 1,183,408.80 = 475,624.40 : x
  2. Step 2: Convert to fraction form
    857,598.80/1,183,408.80 = 475,624.40/x
  3. Step 3: Cross multiply
    857,598.80x = 1,183,408.80 × 475,624.40
  4. Step 4: Simplify right side
    857,598.80x = 562,858,100,454.72
  5. Step 5: Solve for x
    x = 562,858,100,454.72/857,598.80
  6. Step 6: Final answer
    x = 656,318.67

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Double scale
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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.