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Finding the Fourth Proportional to 406,445.90, 560,579.59 and 277,488.31

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Solution

The fourth proportional to 406,445.90, 560,579.59 and 277,488.31 is: 382,718.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,445.90 : 560,579.59 = 277,488.31 : x
  2. Step 2: Convert to fraction form
    406,445.90/560,579.59 = 277,488.31/x
  3. Step 3: Cross multiply
    406,445.90x = 560,579.59 × 277,488.31
  4. Step 4: Simplify right side
    406,445.90x = 155,554,279,908.59
  5. Step 5: Solve for x
    x = 155,554,279,908.59/406,445.90
  6. Step 6: Final answer
    x = 382,718.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.