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Finding the Fourth Proportional to 409,898.40, 614,962.80 and 173,354.40

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Solution

The fourth proportional to 409,898.40, 614,962.80 and 173,354.40 is: 260,080.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,898.40 : 614,962.80 = 173,354.40 : x
  2. Step 2: Convert to fraction form
    409,898.40/614,962.80 = 173,354.40/x
  3. Step 3: Cross multiply
    409,898.40x = 614,962.80 × 173,354.40
  4. Step 4: Simplify right side
    409,898.40x = 106,606,507,216.32
  5. Step 5: Solve for x
    x = 106,606,507,216.32/409,898.40
  6. Step 6: Final answer
    x = 260,080.32

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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.