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Finding the Fourth Proportional to 657,210.40, 985,815.60 and 236,431.60

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Solution

The fourth proportional to 657,210.40, 985,815.60 and 236,431.60 is: 354,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,210.40 : 985,815.60 = 236,431.60 : x
  2. Step 2: Convert to fraction form
    657,210.40/985,815.60 = 236,431.60/x
  3. Step 3: Cross multiply
    657,210.40x = 985,815.60 × 236,431.60
  4. Step 4: Simplify right side
    657,210.40x = 233,077,959,612.96
  5. Step 5: Solve for x
    x = 233,077,959,612.96/657,210.40
  6. Step 6: Final answer
    x = 354,647.40

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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.