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Finding the Fourth Proportional to 357,547.35, 536,320.56 and 91,308.06

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Solution

The fourth proportional to 357,547.35, 536,320.56 and 91,308.06 is: 136,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,547.35 : 536,320.56 = 91,308.06 : x
  2. Step 2: Convert to fraction form
    357,547.35/536,320.56 = 91,308.06/x
  3. Step 3: Cross multiply
    357,547.35x = 536,320.56 × 91,308.06
  4. Step 4: Simplify right side
    357,547.35x = 48,970,389,871.71
  5. Step 5: Solve for x
    x = 48,970,389,871.71/357,547.35
  6. Step 6: Final answer
    x = 136,961.97

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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.