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Finding the Fourth Proportional to 539,828.40, 809,742.60 and 455,847.60

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Solution

The fourth proportional to 539,828.40, 809,742.60 and 455,847.60 is: 683,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,828.40 : 809,742.60 = 455,847.60 : x
  2. Step 2: Convert to fraction form
    539,828.40/809,742.60 = 455,847.60/x
  3. Step 3: Cross multiply
    539,828.40x = 809,742.60 × 455,847.60
  4. Step 4: Simplify right side
    539,828.40x = 369,119,220,827.76
  5. Step 5: Solve for x
    x = 369,119,220,827.76/539,828.40
  6. Step 6: Final answer
    x = 683,771.40

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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.