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Finding the Fourth Proportional to 188,931.08, 260,726.64 and 104,048.48

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Solution

The fourth proportional to 188,931.08, 260,726.64 and 104,048.48 is: 143,587.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,931.08 : 260,726.64 = 104,048.48 : x
  2. Step 2: Convert to fraction form
    188,931.08/260,726.64 = 104,048.48/x
  3. Step 3: Cross multiply
    188,931.08x = 260,726.64 × 104,048.48
  4. Step 4: Simplify right side
    188,931.08x = 27,128,210,587.51
  5. Step 5: Solve for x
    x = 27,128,210,587.51/188,931.08
  6. Step 6: Final answer
    x = 143,587.87

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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.