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Finding the Fourth Proportional to 651,235.80, 976,853.70 and 605,616.60

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Solution

The fourth proportional to 651,235.80, 976,853.70 and 605,616.60 is: 908,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,235.80 : 976,853.70 = 605,616.60 : x
  2. Step 2: Convert to fraction form
    651,235.80/976,853.70 = 605,616.60/x
  3. Step 3: Cross multiply
    651,235.80x = 976,853.70 × 605,616.60
  4. Step 4: Simplify right side
    651,235.80x = 591,598,816,491.42
  5. Step 5: Solve for x
    x = 591,598,816,491.42/651,235.80
  6. Step 6: Final answer
    x = 908,424.90

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Half scale
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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.