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Finding the Fourth Proportional to 144,288.96, 216,248.64 and 61,068.48

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Solution

The fourth proportional to 144,288.96, 216,248.64 and 61,068.48 is: 91,524.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,288.96 : 216,248.64 = 61,068.48 : x
  2. Step 2: Convert to fraction form
    144,288.96/216,248.64 = 61,068.48/x
  3. Step 3: Cross multiply
    144,288.96x = 216,248.64 × 61,068.48
  4. Step 4: Simplify right side
    144,288.96x = 13,205,975,746.87
  5. Step 5: Solve for x
    x = 13,205,975,746.87/144,288.96
  6. Step 6: Final answer
    x = 91,524.51

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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.