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Finding the Fourth Proportional to 525,662.40, 788,493.60 and 401,246.40

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Solution

The fourth proportional to 525,662.40, 788,493.60 and 401,246.40 is: 601,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,662.40 : 788,493.60 = 401,246.40 : x
  2. Step 2: Convert to fraction form
    525,662.40/788,493.60 = 401,246.40/x
  3. Step 3: Cross multiply
    525,662.40x = 788,493.60 × 401,246.40
  4. Step 4: Simplify right side
    525,662.40x = 316,380,218,423.04
  5. Step 5: Solve for x
    x = 316,380,218,423.04/525,662.40
  6. Step 6: Final answer
    x = 601,869.60

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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.