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Finding the Fourth Proportional to 111,809.60, 167,368.80 and 64,923.20

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Solution

The fourth proportional to 111,809.60, 167,368.80 and 64,923.20 is: 97,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,809.60 : 167,368.80 = 64,923.20 : x
  2. Step 2: Convert to fraction form
    111,809.60/167,368.80 = 64,923.20/x
  3. Step 3: Cross multiply
    111,809.60x = 167,368.80 × 64,923.20
  4. Step 4: Simplify right side
    111,809.60x = 10,866,118,076.16
  5. Step 5: Solve for x
    x = 10,866,118,076.16/111,809.60
  6. Step 6: Final answer
    x = 97,184.12

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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.