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Finding the Fourth Proportional to 357,547.85, 536,321.31 and 91,308.56

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Solution

The fourth proportional to 357,547.85, 536,321.31 and 91,308.56 is: 136,962.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,547.85 : 536,321.31 = 91,308.56 : x
  2. Step 2: Convert to fraction form
    357,547.85/536,321.31 = 91,308.56/x
  3. Step 3: Cross multiply
    357,547.85x = 536,321.31 × 91,308.56
  4. Step 4: Simplify right side
    357,547.85x = 48,970,726,513.41
  5. Step 5: Solve for x
    x = 48,970,726,513.41/357,547.85
  6. Step 6: Final answer
    x = 136,962.72

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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.