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Finding the Fourth Proportional to 474,681.53, 711,068.22 and 221,612.83

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Solution

The fourth proportional to 474,681.53, 711,068.22 and 221,612.83 is: 331,973.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,681.53 : 711,068.22 = 221,612.83 : x
  2. Step 2: Convert to fraction form
    474,681.53/711,068.22 = 221,612.83/x
  3. Step 3: Cross multiply
    474,681.53x = 711,068.22 × 221,612.83
  4. Step 4: Simplify right side
    474,681.53x = 157,581,838,779.59
  5. Step 5: Solve for x
    x = 157,581,838,779.59/474,681.53
  6. Step 6: Final answer
    x = 331,973.81

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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.