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Finding the Fourth Proportional to 705,500.22, 973,602.78 and 399,639.62

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Solution

The fourth proportional to 705,500.22, 973,602.78 and 399,639.62 is: 551,509.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,500.22 : 973,602.78 = 399,639.62 : x
  2. Step 2: Convert to fraction form
    705,500.22/973,602.78 = 399,639.62/x
  3. Step 3: Cross multiply
    705,500.22x = 973,602.78 × 399,639.62
  4. Step 4: Simplify right side
    705,500.22x = 389,090,245,030.14
  5. Step 5: Solve for x
    x = 389,090,245,030.14/705,500.22
  6. Step 6: Final answer
    x = 551,509.74

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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.