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Finding the Fourth Proportional to 235,546.94, 353,106.60 and 85,681.31

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Solution

The fourth proportional to 235,546.94, 353,106.60 and 85,681.31 is: 128,444.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,546.94 : 353,106.60 = 85,681.31 : x
  2. Step 2: Convert to fraction form
    235,546.94/353,106.60 = 85,681.31/x
  3. Step 3: Cross multiply
    235,546.94x = 353,106.60 × 85,681.31
  4. Step 4: Simplify right side
    235,546.94x = 30,254,634,292.11
  5. Step 5: Solve for x
    x = 30,254,634,292.11/235,546.94
  6. Step 6: Final answer
    x = 128,444.19

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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.