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Finding the Fourth Proportional to 153,159.66, 211,327.92 and 92,718.54

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Solution

The fourth proportional to 153,159.66, 211,327.92 and 92,718.54 is: 127,931.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,159.66 : 211,327.92 = 92,718.54 : x
  2. Step 2: Convert to fraction form
    153,159.66/211,327.92 = 92,718.54/x
  3. Step 3: Cross multiply
    153,159.66x = 211,327.92 × 92,718.54
  4. Step 4: Simplify right side
    153,159.66x = 19,594,016,203.64
  5. Step 5: Solve for x
    x = 19,594,016,203.64/153,159.66
  6. Step 6: Final answer
    x = 127,931.96

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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.