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Finding the Fourth Proportional to 835,393.82, 1,152,840.58 and 453,420.60

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Solution

The fourth proportional to 835,393.82, 1,152,840.58 and 453,420.60 is: 625,718.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,393.82 : 1,152,840.58 = 453,420.60 : x
  2. Step 2: Convert to fraction form
    835,393.82/1,152,840.58 = 453,420.60/x
  3. Step 3: Cross multiply
    835,393.82x = 1,152,840.58 × 453,420.60
  4. Step 4: Simplify right side
    835,393.82x = 522,721,667,487.95
  5. Step 5: Solve for x
    x = 522,721,667,487.95/835,393.82
  6. Step 6: Final answer
    x = 625,718.86

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Double scale
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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.