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Finding the Fourth Proportional to 683,316.39, 942,853.53 and 392,860.01

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Solution

The fourth proportional to 683,316.39, 942,853.53 and 392,860.01 is: 542,076.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,316.39 : 942,853.53 = 392,860.01 : x
  2. Step 2: Convert to fraction form
    683,316.39/942,853.53 = 392,860.01/x
  3. Step 3: Cross multiply
    683,316.39x = 942,853.53 × 392,860.01
  4. Step 4: Simplify right side
    683,316.39x = 370,409,447,224.34
  5. Step 5: Solve for x
    x = 370,409,447,224.34/683,316.39
  6. Step 6: Final answer
    x = 542,076.05

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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.