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Finding the Fourth Proportional to 705,986.84, 974,261.86 and 383,697.72

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Solution

The fourth proportional to 705,986.84, 974,261.86 and 383,697.72 is: 529,502.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,986.84 : 974,261.86 = 383,697.72 : x
  2. Step 2: Convert to fraction form
    705,986.84/974,261.86 = 383,697.72/x
  3. Step 3: Cross multiply
    705,986.84x = 974,261.86 × 383,697.72
  4. Step 4: Simplify right side
    705,986.84x = 373,822,054,364.96
  5. Step 5: Solve for x
    x = 373,822,054,364.96/705,986.84
  6. Step 6: Final answer
    x = 529,502.86

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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.