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Finding the Fourth Proportional to 666,021.80, 919,530.36 and 462,001.36

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Solution

The fourth proportional to 666,021.80, 919,530.36 and 462,001.36 is: 637,853.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,021.80 : 919,530.36 = 462,001.36 : x
  2. Step 2: Convert to fraction form
    666,021.80/919,530.36 = 462,001.36/x
  3. Step 3: Cross multiply
    666,021.80x = 919,530.36 × 462,001.36
  4. Step 4: Simplify right side
    666,021.80x = 424,824,269,973.63
  5. Step 5: Solve for x
    x = 424,824,269,973.63/666,021.80
  6. Step 6: Final answer
    x = 637,853.40

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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.