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Finding the Fourth Proportional to 144,357.76, 216,554.24 and 61,223.68

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Solution

The fourth proportional to 144,357.76, 216,554.24 and 61,223.68 is: 91,842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,357.76 : 216,554.24 = 61,223.68 : x
  2. Step 2: Convert to fraction form
    144,357.76/216,554.24 = 61,223.68/x
  3. Step 3: Cross multiply
    144,357.76x = 216,554.24 × 61,223.68
  4. Step 4: Simplify right side
    144,357.76x = 13,258,247,492.40
  5. Step 5: Solve for x
    x = 13,258,247,492.40/144,357.76
  6. Step 6: Final answer
    x = 91,842.98

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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.