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Finding the Fourth Proportional to 539,905.20, 745,005.63 and 298,173.34

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Solution

The fourth proportional to 539,905.20, 745,005.63 and 298,173.34 is: 411,444.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,905.20 : 745,005.63 = 298,173.34 : x
  2. Step 2: Convert to fraction form
    539,905.20/745,005.63 = 298,173.34/x
  3. Step 3: Cross multiply
    539,905.20x = 745,005.63 × 298,173.34
  4. Step 4: Simplify right side
    539,905.20x = 222,140,817,015.90
  5. Step 5: Solve for x
    x = 222,140,817,015.90/539,905.20
  6. Step 6: Final answer
    x = 411,444.11

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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.