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Finding the Fourth Proportional to 935,824.40, 1,403,736.60 and 921,827.60

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Solution

The fourth proportional to 935,824.40, 1,403,736.60 and 921,827.60 is: 1,382,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,824.40 : 1,403,736.60 = 921,827.60 : x
  2. Step 2: Convert to fraction form
    935,824.40/1,403,736.60 = 921,827.60/x
  3. Step 3: Cross multiply
    935,824.40x = 1,403,736.60 × 921,827.60
  4. Step 4: Simplify right side
    935,824.40x = 1,294,003,141,010.16
  5. Step 5: Solve for x
    x = 1,294,003,141,010.16/935,824.40
  6. Step 6: Final answer
    x = 1,382,741.40

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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.