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Finding the Fourth Proportional to 316,534.80, 474,802.20 and 94,918.80

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Solution

The fourth proportional to 316,534.80, 474,802.20 and 94,918.80 is: 142,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,534.80 : 474,802.20 = 94,918.80 : x
  2. Step 2: Convert to fraction form
    316,534.80/474,802.20 = 94,918.80/x
  3. Step 3: Cross multiply
    316,534.80x = 474,802.20 × 94,918.80
  4. Step 4: Simplify right side
    316,534.80x = 45,067,655,061.36
  5. Step 5: Solve for x
    x = 45,067,655,061.36/316,534.80
  6. Step 6: Final answer
    x = 142,378.20

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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.