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Finding the Fourth Proportional to 893,085.90, 1,232,460 and 485,189.34

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Solution

The fourth proportional to 893,085.90, 1,232,460 and 485,189.34 is: 669,562.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,085.90 : 1,232,460 = 485,189.34 : x
  2. Step 2: Convert to fraction form
    893,085.90/1,232,460 = 485,189.34/x
  3. Step 3: Cross multiply
    893,085.90x = 1,232,460 × 485,189.34
  4. Step 4: Simplify right side
    893,085.90x = 597,976,453,976.40
  5. Step 5: Solve for x
    x = 597,976,453,976.40/893,085.90
  6. Step 6: Final answer
    x = 669,562.08

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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.