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Finding the Fourth Proportional to 357,134.76, 535,705.32 and 90,895.56

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Solution

The fourth proportional to 357,134.76, 535,705.32 and 90,895.56 is: 136,344.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,134.76 : 535,705.32 = 90,895.56 : x
  2. Step 2: Convert to fraction form
    357,134.76/535,705.32 = 90,895.56/x
  3. Step 3: Cross multiply
    357,134.76x = 535,705.32 × 90,895.56
  4. Step 4: Simplify right side
    357,134.76x = 48,693,235,056.38
  5. Step 5: Solve for x
    x = 48,693,235,056.38/357,134.76
  6. Step 6: Final answer
    x = 136,344.15

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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.