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Finding the Fourth Proportional to 705,406.32, 973,467.72 and 383,119.47

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Solution

The fourth proportional to 705,406.32, 973,467.72 and 383,119.47 is: 528,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,406.32 : 973,467.72 = 383,119.47 : x
  2. Step 2: Convert to fraction form
    705,406.32/973,467.72 = 383,119.47/x
  3. Step 3: Cross multiply
    705,406.32x = 973,467.72 × 383,119.47
  4. Step 4: Simplify right side
    705,406.32x = 372,954,436,948.51
  5. Step 5: Solve for x
    x = 372,954,436,948.51/705,406.32
  6. Step 6: Final answer
    x = 528,708.67

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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.