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Finding the Fourth Proportional to 705,816.70, 974,032.90 and 383,526.80

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Solution

The fourth proportional to 705,816.70, 974,032.90 and 383,526.80 is: 529,270.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,816.70 : 974,032.90 = 383,526.80 : x
  2. Step 2: Convert to fraction form
    705,816.70/974,032.90 = 383,526.80/x
  3. Step 3: Cross multiply
    705,816.70x = 974,032.90 × 383,526.80
  4. Step 4: Simplify right side
    705,816.70x = 373,567,721,231.72
  5. Step 5: Solve for x
    x = 373,567,721,231.72/705,816.70
  6. Step 6: Final answer
    x = 529,270.16

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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.