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Finding the Fourth Proportional to 289,003.32, 398,830.32 and 174,281.40

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Solution

The fourth proportional to 289,003.32, 398,830.32 and 174,281.40 is: 240,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,003.32 : 398,830.32 = 174,281.40 : x
  2. Step 2: Convert to fraction form
    289,003.32/398,830.32 = 174,281.40/x
  3. Step 3: Cross multiply
    289,003.32x = 398,830.32 × 174,281.40
  4. Step 4: Simplify right side
    289,003.32x = 69,508,706,532.05
  5. Step 5: Solve for x
    x = 69,508,706,532.05/289,003.32
  6. Step 6: Final answer
    x = 240,511.79

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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.