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Finding the Fourth Proportional to 117,848.16, 162,690.72 and 90,930.24

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Solution

The fourth proportional to 117,848.16, 162,690.72 and 90,930.24 is: 125,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,848.16 : 162,690.72 = 90,930.24 : x
  2. Step 2: Convert to fraction form
    117,848.16/162,690.72 = 90,930.24/x
  3. Step 3: Cross multiply
    117,848.16x = 162,690.72 × 90,930.24
  4. Step 4: Simplify right side
    117,848.16x = 14,793,506,215.37
  5. Step 5: Solve for x
    x = 14,793,506,215.37/117,848.16
  6. Step 6: Final answer
    x = 125,530.23

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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.