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Finding the Fourth Proportional to 705,818.21, 974,035.29 and 383,528.30

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Solution

The fourth proportional to 705,818.21, 974,035.29 and 383,528.30 is: 529,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,818.21 : 974,035.29 = 383,528.30 : x
  2. Step 2: Convert to fraction form
    705,818.21/974,035.29 = 383,528.30/x
  3. Step 3: Cross multiply
    705,818.21x = 974,035.29 × 383,528.30
  4. Step 4: Simplify right side
    705,818.21x = 373,570,098,913.71
  5. Step 5: Solve for x
    x = 373,570,098,913.71/705,818.21
  6. Step 6: Final answer
    x = 529,272.40

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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.