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Finding the Fourth Proportional to 413,709.70, 620,564.55 and 369,094.90

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Solution

The fourth proportional to 413,709.70, 620,564.55 and 369,094.90 is: 553,642.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,709.70 : 620,564.55 = 369,094.90 : x
  2. Step 2: Convert to fraction form
    413,709.70/620,564.55 = 369,094.90/x
  3. Step 3: Cross multiply
    413,709.70x = 620,564.55 × 369,094.90
  4. Step 4: Simplify right side
    413,709.70x = 229,047,210,525.80
  5. Step 5: Solve for x
    x = 229,047,210,525.80/413,709.70
  6. Step 6: Final answer
    x = 553,642.35

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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.