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Finding the Fourth Proportional to 613,063.51, 919,595.78 and 293,140.11

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Solution

The fourth proportional to 613,063.51, 919,595.78 and 293,140.11 is: 439,710.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,063.51 : 919,595.78 = 293,140.11 : x
  2. Step 2: Convert to fraction form
    613,063.51/919,595.78 = 293,140.11/x
  3. Step 3: Cross multiply
    613,063.51x = 919,595.78 × 293,140.11
  4. Step 4: Simplify right side
    613,063.51x = 269,570,408,104.74
  5. Step 5: Solve for x
    x = 269,570,408,104.74/613,063.51
  6. Step 6: Final answer
    x = 439,710.41

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.