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Finding the Fourth Proportional to 536,630.40, 804,945.60 and 387,914.40

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Solution

The fourth proportional to 536,630.40, 804,945.60 and 387,914.40 is: 581,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,630.40 : 804,945.60 = 387,914.40 : x
  2. Step 2: Convert to fraction form
    536,630.40/804,945.60 = 387,914.40/x
  3. Step 3: Cross multiply
    536,630.40x = 804,945.60 × 387,914.40
  4. Step 4: Simplify right side
    536,630.40x = 312,249,989,456.64
  5. Step 5: Solve for x
    x = 312,249,989,456.64/536,630.40
  6. Step 6: Final answer
    x = 581,871.60

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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.