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Finding the Fourth Proportional to 507,607.16, 700,497.88 and 281,252.66

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Solution

The fourth proportional to 507,607.16, 700,497.88 and 281,252.66 is: 388,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,607.16 : 700,497.88 = 281,252.66 : x
  2. Step 2: Convert to fraction form
    507,607.16/700,497.88 = 281,252.66/x
  3. Step 3: Cross multiply
    507,607.16x = 700,497.88 × 281,252.66
  4. Step 4: Simplify right side
    507,607.16x = 197,016,887,868.74
  5. Step 5: Solve for x
    x = 197,016,887,868.74/507,607.16
  6. Step 6: Final answer
    x = 388,128.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.