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Finding the Fourth Proportional to 169,420.02, 254,065.20 and 57,070

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Solution

The fourth proportional to 169,420.02, 254,065.20 and 57,070 is: 85,583.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,420.02 : 254,065.20 = 57,070 : x
  2. Step 2: Convert to fraction form
    169,420.02/254,065.20 = 57,070/x
  3. Step 3: Cross multiply
    169,420.02x = 254,065.20 × 57,070
  4. Step 4: Simplify right side
    169,420.02x = 14,499,500,964
  5. Step 5: Solve for x
    x = 14,499,500,964/169,420.02
  6. Step 6: Final answer
    x = 85,583.16

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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.