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Finding the Fourth Proportional to 700,711.06, 966,982.35 and 398,905.06

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Solution

The fourth proportional to 700,711.06, 966,982.35 and 398,905.06 is: 550,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,711.06 : 966,982.35 = 398,905.06 : x
  2. Step 2: Convert to fraction form
    700,711.06/966,982.35 = 398,905.06/x
  3. Step 3: Cross multiply
    700,711.06x = 966,982.35 × 398,905.06
  4. Step 4: Simplify right side
    700,711.06x = 385,734,152,345.69
  5. Step 5: Solve for x
    x = 385,734,152,345.69/700,711.06
  6. Step 6: Final answer
    x = 550,489.60

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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.