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Finding the Fourth Proportional to 117,726.48, 162,461.32 and 87,646.32

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Solution

The fourth proportional to 117,726.48, 162,461.32 and 87,646.32 is: 120,951.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,726.48 : 162,461.32 = 87,646.32 : x
  2. Step 2: Convert to fraction form
    117,726.48/162,461.32 = 87,646.32/x
  3. Step 3: Cross multiply
    117,726.48x = 162,461.32 × 87,646.32
  4. Step 4: Simplify right side
    117,726.48x = 14,239,136,621.23
  5. Step 5: Solve for x
    x = 14,239,136,621.23/117,726.48
  6. Step 6: Final answer
    x = 120,951.01

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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.