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Finding the Fourth Proportional to 539,383.40, 808,880.70 and 273,055.40

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Solution

The fourth proportional to 539,383.40, 808,880.70 and 273,055.40 is: 409,484.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,383.40 : 808,880.70 = 273,055.40 : x
  2. Step 2: Convert to fraction form
    539,383.40/808,880.70 = 273,055.40/x
  3. Step 3: Cross multiply
    539,383.40x = 808,880.70 × 273,055.40
  4. Step 4: Simplify right side
    539,383.40x = 220,869,243,090.78
  5. Step 5: Solve for x
    x = 220,869,243,090.78/539,383.40
  6. Step 6: Final answer
    x = 409,484.69

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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.