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Finding the Fourth Proportional to 368,931.40, 553,397.10 and 211,049.14

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Solution

The fourth proportional to 368,931.40, 553,397.10 and 211,049.14 is: 316,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,931.40 : 553,397.10 = 211,049.14 : x
  2. Step 2: Convert to fraction form
    368,931.40/553,397.10 = 211,049.14/x
  3. Step 3: Cross multiply
    368,931.40x = 553,397.10 × 211,049.14
  4. Step 4: Simplify right side
    368,931.40x = 116,793,980,650.00
  5. Step 5: Solve for x
    x = 116,793,980,650.00/368,931.40
  6. Step 6: Final answer
    x = 316,573.71

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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.