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Finding the Fourth Proportional to 689,005.90, 950,870.88 and 383,084.68

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Solution

The fourth proportional to 689,005.90, 950,870.88 and 383,084.68 is: 528,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,005.90 : 950,870.88 = 383,084.68 : x
  2. Step 2: Convert to fraction form
    689,005.90/950,870.88 = 383,084.68/x
  3. Step 3: Cross multiply
    689,005.90x = 950,870.88 × 383,084.68
  4. Step 4: Simplify right side
    689,005.90x = 364,264,066,786.12
  5. Step 5: Solve for x
    x = 364,264,066,786.12/689,005.90
  6. Step 6: Final answer
    x = 528,680.62

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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.