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Finding the Fourth Proportional to 155,551.40, 233,135.10 and 105,631.40

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Solution

The fourth proportional to 155,551.40, 233,135.10 and 105,631.40 is: 158,316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,551.40 : 233,135.10 = 105,631.40 : x
  2. Step 2: Convert to fraction form
    155,551.40/233,135.10 = 105,631.40/x
  3. Step 3: Cross multiply
    155,551.40x = 233,135.10 × 105,631.40
  4. Step 4: Simplify right side
    155,551.40x = 24,626,387,002.14
  5. Step 5: Solve for x
    x = 24,626,387,002.14/155,551.40
  6. Step 6: Final answer
    x = 158,316.72

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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.