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Finding the Fourth Proportional to 531,707.20, 796,869.60 and 383,790.40

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Solution

The fourth proportional to 531,707.20, 796,869.60 and 383,790.40 is: 575,186.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,707.20 : 796,869.60 = 383,790.40 : x
  2. Step 2: Convert to fraction form
    531,707.20/796,869.60 = 383,790.40/x
  3. Step 3: Cross multiply
    531,707.20x = 796,869.60 × 383,790.40
  4. Step 4: Simplify right side
    531,707.20x = 305,830,902,531.84
  5. Step 5: Solve for x
    x = 305,830,902,531.84/531,707.20
  6. Step 6: Final answer
    x = 575,186.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.