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Finding the Fourth Proportional to 121,215.84, 181,623.28 and 61,970.01

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Solution

The fourth proportional to 121,215.84, 181,623.28 and 61,970.01 is: 92,852.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,215.84 : 181,623.28 = 61,970.01 : x
  2. Step 2: Convert to fraction form
    121,215.84/181,623.28 = 61,970.01/x
  3. Step 3: Cross multiply
    121,215.84x = 181,623.28 × 61,970.01
  4. Step 4: Simplify right side
    121,215.84x = 11,255,196,477.83
  5. Step 5: Solve for x
    x = 11,255,196,477.83/121,215.84
  6. Step 6: Final answer
    x = 92,852.52

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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.