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Finding the Fourth Proportional to 92,948.94, 128,322.90 and 61,210.26

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Solution

The fourth proportional to 92,948.94, 128,322.90 and 61,210.26 is: 84,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,948.94 : 128,322.90 = 61,210.26 : x
  2. Step 2: Convert to fraction form
    92,948.94/128,322.90 = 61,210.26/x
  3. Step 3: Cross multiply
    92,948.94x = 128,322.90 × 61,210.26
  4. Step 4: Simplify right side
    92,948.94x = 7,854,678,072.95
  5. Step 5: Solve for x
    x = 7,854,678,072.95/92,948.94
  6. Step 6: Final answer
    x = 84,505.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.