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Finding the Fourth Proportional to 700,188.68, 966,264.32 and 398,382.68

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Solution

The fourth proportional to 700,188.68, 966,264.32 and 398,382.68 is: 549,770.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,188.68 : 966,264.32 = 398,382.68 : x
  2. Step 2: Convert to fraction form
    700,188.68/966,264.32 = 398,382.68/x
  3. Step 3: Cross multiply
    700,188.68x = 966,264.32 × 398,382.68
  4. Step 4: Simplify right side
    700,188.68x = 384,942,969,389.98
  5. Step 5: Solve for x
    x = 384,942,969,389.98/700,188.68
  6. Step 6: Final answer
    x = 549,770.34

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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.