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Finding the Fourth Proportional to 621,996.47, 858,437.60 and 350,117.13

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Solution

The fourth proportional to 621,996.47, 858,437.60 and 350,117.13 is: 483,208.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,996.47 : 858,437.60 = 350,117.13 : x
  2. Step 2: Convert to fraction form
    621,996.47/858,437.60 = 350,117.13/x
  3. Step 3: Cross multiply
    621,996.47x = 858,437.60 × 350,117.13
  4. Step 4: Simplify right side
    621,996.47x = 300,553,710,264.64
  5. Step 5: Solve for x
    x = 300,553,710,264.64/621,996.47
  6. Step 6: Final answer
    x = 483,208.07

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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.