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Finding the Fourth Proportional to 539,109.60, 808,664.40 and 434,133.60

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Solution

The fourth proportional to 539,109.60, 808,664.40 and 434,133.60 is: 651,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,109.60 : 808,664.40 = 434,133.60 : x
  2. Step 2: Convert to fraction form
    539,109.60/808,664.40 = 434,133.60/x
  3. Step 3: Cross multiply
    539,109.60x = 808,664.40 × 434,133.60
  4. Step 4: Simplify right side
    539,109.60x = 351,068,387,163.84
  5. Step 5: Solve for x
    x = 351,068,387,163.84/539,109.60
  6. Step 6: Final answer
    x = 651,200.40

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Double scale
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Similar ratio
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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.