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Finding the Fourth Proportional to 705,927.78, 974,189.58 and 383,642.97

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Solution

The fourth proportional to 705,927.78, 974,189.58 and 383,642.97 is: 529,432.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,927.78 : 974,189.58 = 383,642.97 : x
  2. Step 2: Convert to fraction form
    705,927.78/974,189.58 = 383,642.97/x
  3. Step 3: Cross multiply
    705,927.78x = 974,189.58 × 383,642.97
  4. Step 4: Simplify right side
    705,927.78x = 373,740,983,814.25
  5. Step 5: Solve for x
    x = 373,740,983,814.25/705,927.78
  6. Step 6: Final answer
    x = 529,432.32

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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.