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Finding the Fourth Proportional to 705,522.95, 973,639.78 and 383,251.49

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Solution

The fourth proportional to 705,522.95, 973,639.78 and 383,251.49 is: 528,896.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,522.95 : 973,639.78 = 383,251.49 : x
  2. Step 2: Convert to fraction form
    705,522.95/973,639.78 = 383,251.49/x
  3. Step 3: Cross multiply
    705,522.95x = 973,639.78 × 383,251.49
  4. Step 4: Simplify right side
    705,522.95x = 373,148,896,408.27
  5. Step 5: Solve for x
    x = 373,148,896,408.27/705,522.95
  6. Step 6: Final answer
    x = 528,896.89

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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.