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Finding the Fourth Proportional to 66,547.98, 99,909.45 and 61,046.46

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Solution

The fourth proportional to 66,547.98, 99,909.45 and 61,046.46 is: 91,649.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,547.98 : 99,909.45 = 61,046.46 : x
  2. Step 2: Convert to fraction form
    66,547.98/99,909.45 = 61,046.46/x
  3. Step 3: Cross multiply
    66,547.98x = 99,909.45 × 61,046.46
  4. Step 4: Simplify right side
    66,547.98x = 6,099,118,243.05
  5. Step 5: Solve for x
    x = 6,099,118,243.05/66,547.98
  6. Step 6: Final answer
    x = 91,649.94

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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.