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Finding the Fourth Proportional to 1,147,913.76, 1,721,931.84 and 349,134.24

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Solution

The fourth proportional to 1,147,913.76, 1,721,931.84 and 349,134.24 is: 523,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,913.76 : 1,721,931.84 = 349,134.24 : x
  2. Step 2: Convert to fraction form
    1,147,913.76/1,721,931.84 = 349,134.24/x
  3. Step 3: Cross multiply
    1,147,913.76x = 1,721,931.84 × 349,134.24
  4. Step 4: Simplify right side
    1,147,913.76x = 601,185,364,290.20
  5. Step 5: Solve for x
    x = 601,185,364,290.20/1,147,913.76
  6. Step 6: Final answer
    x = 523,719.97

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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.