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Finding the Fourth Proportional to 569,638.49, 786,085.56 and 314,980.97

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Solution

The fourth proportional to 569,638.49, 786,085.56 and 314,980.97 is: 434,665.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,638.49 : 786,085.56 = 314,980.97 : x
  2. Step 2: Convert to fraction form
    569,638.49/786,085.56 = 314,980.97/x
  3. Step 3: Cross multiply
    569,638.49x = 786,085.56 × 314,980.97
  4. Step 4: Simplify right side
    569,638.49x = 247,601,988,261.37
  5. Step 5: Solve for x
    x = 247,601,988,261.37/569,638.49
  6. Step 6: Final answer
    x = 434,665.13

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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.