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Finding the Fourth Proportional to 357,631.32, 536,447.23 and 91,392.08

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Solution

The fourth proportional to 357,631.32, 536,447.23 and 91,392.08 is: 137,088.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,631.32 : 536,447.23 = 91,392.08 : x
  2. Step 2: Convert to fraction form
    357,631.32/536,447.23 = 91,392.08/x
  3. Step 3: Cross multiply
    357,631.32x = 536,447.23 × 91,392.08
  4. Step 4: Simplify right side
    357,631.32x = 49,027,027,702.98
  5. Step 5: Solve for x
    x = 49,027,027,702.98/357,631.32
  6. Step 6: Final answer
    x = 137,088.18

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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.