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Finding the Fourth Proportional to 357,674.34, 536,509.35 and 91,434.42

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Solution

The fourth proportional to 357,674.34, 536,509.35 and 91,434.42 is: 137,151.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,674.34 : 536,509.35 = 91,434.42 : x
  2. Step 2: Convert to fraction form
    357,674.34/536,509.35 = 91,434.42/x
  3. Step 3: Cross multiply
    357,674.34x = 536,509.35 × 91,434.42
  4. Step 4: Simplify right side
    357,674.34x = 49,055,421,241.83
  5. Step 5: Solve for x
    x = 49,055,421,241.83/357,674.34
  6. Step 6: Final answer
    x = 137,151.08

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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.