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Finding the Fourth Proportional to 404,638.80, 607,031.10 and 168,005.40

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Solution

The fourth proportional to 404,638.80, 607,031.10 and 168,005.40 is: 252,038.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,638.80 : 607,031.10 = 168,005.40 : x
  2. Step 2: Convert to fraction form
    404,638.80/607,031.10 = 168,005.40/x
  3. Step 3: Cross multiply
    404,638.80x = 607,031.10 × 168,005.40
  4. Step 4: Simplify right side
    404,638.80x = 101,984,502,767.94
  5. Step 5: Solve for x
    x = 101,984,502,767.94/404,638.80
  6. Step 6: Final answer
    x = 252,038.37

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1.5x scale

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.