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Finding the Fourth Proportional to 98,784.76, 136,317.74 and 54,064.12

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Solution

The fourth proportional to 98,784.76, 136,317.74 and 54,064.12 is: 74,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,784.76 : 136,317.74 = 54,064.12 : x
  2. Step 2: Convert to fraction form
    98,784.76/136,317.74 = 54,064.12/x
  3. Step 3: Cross multiply
    98,784.76x = 136,317.74 × 54,064.12
  4. Step 4: Simplify right side
    98,784.76x = 7,369,898,653.49
  5. Step 5: Solve for x
    x = 7,369,898,653.49/98,784.76
  6. Step 6: Final answer
    x = 74,605.62

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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.