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Finding the Fourth Proportional to 413,587.20, 579,809.40 and 413,587.20

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Solution

The fourth proportional to 413,587.20, 579,809.40 and 413,587.20 is: 579,809.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,587.20 : 579,809.40 = 413,587.20 : x
  2. Step 2: Convert to fraction form
    413,587.20/579,809.40 = 413,587.20/x
  3. Step 3: Cross multiply
    413,587.20x = 579,809.40 × 413,587.20
  4. Step 4: Simplify right side
    413,587.20x = 239,801,746,279.68
  5. Step 5: Solve for x
    x = 239,801,746,279.68/413,587.20
  6. Step 6: Final answer
    x = 579,809.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.