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Finding the Fourth Proportional to 235,386.80, 352,968.96 and 85,522.58

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Solution

The fourth proportional to 235,386.80, 352,968.96 and 85,522.58 is: 128,243.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,386.80 : 352,968.96 = 85,522.58 : x
  2. Step 2: Convert to fraction form
    235,386.80/352,968.96 = 85,522.58/x
  3. Step 3: Cross multiply
    235,386.80x = 352,968.96 × 85,522.58
  4. Step 4: Simplify right side
    235,386.80x = 30,186,816,119.12
  5. Step 5: Solve for x
    x = 30,186,816,119.12/235,386.80
  6. Step 6: Final answer
    x = 128,243.45

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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.