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Finding the Fourth Proportional to 553,641.53, 830,462.13 and 316,816.79

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Solution

The fourth proportional to 553,641.53, 830,462.13 and 316,816.79 is: 475,225.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,641.53 : 830,462.13 = 316,816.79 : x
  2. Step 2: Convert to fraction form
    553,641.53/830,462.13 = 316,816.79/x
  3. Step 3: Cross multiply
    553,641.53x = 830,462.13 × 316,816.79
  4. Step 4: Simplify right side
    553,641.53x = 263,104,342,090.85
  5. Step 5: Solve for x
    x = 263,104,342,090.85/553,641.53
  6. Step 6: Final answer
    x = 475,225.09

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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.