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Finding the Fourth Proportional to 118,973.61, 164,184.57 and 65,258.19

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Solution

The fourth proportional to 118,973.61, 164,184.57 and 65,258.19 is: 90,056.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,973.61 : 164,184.57 = 65,258.19 : x
  2. Step 2: Convert to fraction form
    118,973.61/164,184.57 = 65,258.19/x
  3. Step 3: Cross multiply
    118,973.61x = 164,184.57 × 65,258.19
  4. Step 4: Simplify right side
    118,973.61x = 10,714,387,864.13
  5. Step 5: Solve for x
    x = 10,714,387,864.13/118,973.61
  6. Step 6: Final answer
    x = 90,056.84

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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.