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Finding the Fourth Proportional to 569,803.10, 786,275.40 and 315,148.82

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Solution

The fourth proportional to 569,803.10, 786,275.40 and 315,148.82 is: 434,876.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,803.10 : 786,275.40 = 315,148.82 : x
  2. Step 2: Convert to fraction form
    569,803.10/786,275.40 = 315,148.82/x
  3. Step 3: Cross multiply
    569,803.10x = 786,275.40 × 315,148.82
  4. Step 4: Simplify right side
    569,803.10x = 247,793,764,505.03
  5. Step 5: Solve for x
    x = 247,793,764,505.03/569,803.10
  6. Step 6: Final answer
    x = 434,876.13

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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.