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Finding the Fourth Proportional to 539,700.75, 744,852.65 and 313,346.25

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Solution

The fourth proportional to 539,700.75, 744,852.65 and 313,346.25 is: 432,455.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,700.75 : 744,852.65 = 313,346.25 : x
  2. Step 2: Convert to fraction form
    539,700.75/744,852.65 = 313,346.25/x
  3. Step 3: Cross multiply
    539,700.75x = 744,852.65 × 313,346.25
  4. Step 4: Simplify right side
    539,700.75x = 233,396,783,113.33
  5. Step 5: Solve for x
    x = 233,396,783,113.33/539,700.75
  6. Step 6: Final answer
    x = 432,455.92

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Double scale
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Similar ratio
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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.