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Finding the Fourth Proportional to 893,980.75, 1,233,693.45 and 491,572.75

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Solution

The fourth proportional to 893,980.75, 1,233,693.45 and 491,572.75 is: 678,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,980.75 : 1,233,693.45 = 491,572.75 : x
  2. Step 2: Convert to fraction form
    893,980.75/1,233,693.45 = 491,572.75/x
  3. Step 3: Cross multiply
    893,980.75x = 1,233,693.45 × 491,572.75
  4. Step 4: Simplify right side
    893,980.75x = 606,450,081,873.49
  5. Step 5: Solve for x
    x = 606,450,081,873.49/893,980.75
  6. Step 6: Final answer
    x = 678,370.40

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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.