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Finding the Fourth Proportional to 98,312.51, 147,129.90 and 60,336.56

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Solution

The fourth proportional to 98,312.51, 147,129.90 and 60,336.56 is: 90,296.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,312.51 : 147,129.90 = 60,336.56 : x
  2. Step 2: Convert to fraction form
    98,312.51/147,129.90 = 60,336.56/x
  3. Step 3: Cross multiply
    98,312.51x = 147,129.90 × 60,336.56
  4. Step 4: Simplify right side
    98,312.51x = 8,877,311,303.49
  5. Step 5: Solve for x
    x = 8,877,311,303.49/98,312.51
  6. Step 6: Final answer
    x = 90,296.87

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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.