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Finding the Fourth Proportional to 705,507.45, 973,604.06 and 383,220.20

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Solution

The fourth proportional to 705,507.45, 973,604.06 and 383,220.20 is: 528,845.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,507.45 : 973,604.06 = 383,220.20 : x
  2. Step 2: Convert to fraction form
    705,507.45/973,604.06 = 383,220.20/x
  3. Step 3: Cross multiply
    705,507.45x = 973,604.06 × 383,220.20
  4. Step 4: Simplify right side
    705,507.45x = 373,104,735,809.89
  5. Step 5: Solve for x
    x = 373,104,735,809.89/705,507.45
  6. Step 6: Final answer
    x = 528,845.92

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Double scale
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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.