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Finding the Fourth Proportional to 372,657.40, 558,986.10 and 346,413.40

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Solution

The fourth proportional to 372,657.40, 558,986.10 and 346,413.40 is: 519,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,657.40 : 558,986.10 = 346,413.40 : x
  2. Step 2: Convert to fraction form
    372,657.40/558,986.10 = 346,413.40/x
  3. Step 3: Cross multiply
    372,657.40x = 558,986.10 × 346,413.40
  4. Step 4: Simplify right side
    372,657.40x = 193,640,275,453.74
  5. Step 5: Solve for x
    x = 193,640,275,453.74/372,657.40
  6. Step 6: Final answer
    x = 519,620.10

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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.