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Finding the Fourth Proportional to 700,606.74, 966,886.47 and 398,800.74

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Solution

The fourth proportional to 700,606.74, 966,886.47 and 398,800.74 is: 550,373.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,606.74 : 966,886.47 = 398,800.74 : x
  2. Step 2: Convert to fraction form
    700,606.74/966,886.47 = 398,800.74/x
  3. Step 3: Cross multiply
    700,606.74x = 966,886.47 × 398,800.74
  4. Step 4: Simplify right side
    700,606.74x = 385,595,039,731.99
  5. Step 5: Solve for x
    x = 385,595,039,731.99/700,606.74
  6. Step 6: Final answer
    x = 550,373.01

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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.