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Finding the Fourth Proportional to 119,693.72, 165,185.80 and 68,714.76

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Solution

The fourth proportional to 119,693.72, 165,185.80 and 68,714.76 is: 94,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,693.72 : 165,185.80 = 68,714.76 : x
  2. Step 2: Convert to fraction form
    119,693.72/165,185.80 = 68,714.76/x
  3. Step 3: Cross multiply
    119,693.72x = 165,185.80 × 68,714.76
  4. Step 4: Simplify right side
    119,693.72x = 11,350,702,602.41
  5. Step 5: Solve for x
    x = 11,350,702,602.41/119,693.72
  6. Step 6: Final answer
    x = 94,831.23

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1.5x scale

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.