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Finding the Fourth Proportional to 176,640.64, 265,031.75 and 64,328.68

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Solution

The fourth proportional to 176,640.64, 265,031.75 and 64,328.68 is: 96,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,640.64 : 265,031.75 = 64,328.68 : x
  2. Step 2: Convert to fraction form
    176,640.64/265,031.75 = 64,328.68/x
  3. Step 3: Cross multiply
    176,640.64x = 265,031.75 × 64,328.68
  4. Step 4: Simplify right side
    176,640.64x = 17,049,142,635.59
  5. Step 5: Solve for x
    x = 17,049,142,635.59/176,640.64
  6. Step 6: Final answer
    x = 96,518.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.