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Finding the Fourth Proportional to 719,584.80, 993,030.88 and 397,289.12

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Solution

The fourth proportional to 719,584.80, 993,030.88 and 397,289.12 is: 548,261.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,584.80 : 993,030.88 = 397,289.12 : x
  2. Step 2: Convert to fraction form
    719,584.80/993,030.88 = 397,289.12/x
  3. Step 3: Cross multiply
    719,584.80x = 993,030.88 × 397,289.12
  4. Step 4: Simplify right side
    719,584.80x = 394,520,364,448.03
  5. Step 5: Solve for x
    x = 394,520,364,448.03/719,584.80
  6. Step 6: Final answer
    x = 548,261.11

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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.