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Finding the Fourth Proportional to 526,804.83, 726,990.63 and 285,087.40

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Solution

The fourth proportional to 526,804.83, 726,990.63 and 285,087.40 is: 393,420.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,804.83 : 726,990.63 = 285,087.40 : x
  2. Step 2: Convert to fraction form
    526,804.83/726,990.63 = 285,087.40/x
  3. Step 3: Cross multiply
    526,804.83x = 726,990.63 × 285,087.40
  4. Step 4: Simplify right side
    526,804.83x = 207,255,865,644.51
  5. Step 5: Solve for x
    x = 207,255,865,644.51/526,804.83
  6. Step 6: Final answer
    x = 393,420.59

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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.