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Finding the Fourth Proportional to 191,310.66, 286,962.66 and 66,648.42

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Solution

The fourth proportional to 191,310.66, 286,962.66 and 66,648.42 is: 99,971.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,310.66 : 286,962.66 = 66,648.42 : x
  2. Step 2: Convert to fraction form
    191,310.66/286,962.66 = 66,648.42/x
  3. Step 3: Cross multiply
    191,310.66x = 286,962.66 × 66,648.42
  4. Step 4: Simplify right side
    191,310.66x = 19,125,607,888.00
  5. Step 5: Solve for x
    x = 19,125,607,888.00/191,310.66
  6. Step 6: Final answer
    x = 99,971.47

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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.