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Finding the Fourth Proportional to 98,392.90, 147,573.51 and 28,256.26

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Solution

The fourth proportional to 98,392.90, 147,573.51 and 28,256.26 is: 42,379.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,392.90 : 147,573.51 = 28,256.26 : x
  2. Step 2: Convert to fraction form
    98,392.90/147,573.51 = 28,256.26/x
  3. Step 3: Cross multiply
    98,392.90x = 147,573.51 × 28,256.26
  4. Step 4: Simplify right side
    98,392.90x = 4,169,875,467.67
  5. Step 5: Solve for x
    x = 4,169,875,467.67/98,392.90
  6. Step 6: Final answer
    x = 42,379.84

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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.