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Finding the Fourth Proportional to 621,280.82, 857,656.38 and 468,381.16

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Solution

The fourth proportional to 621,280.82, 857,656.38 and 468,381.16 is: 646,583.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,280.82 : 857,656.38 = 468,381.16 : x
  2. Step 2: Convert to fraction form
    621,280.82/857,656.38 = 468,381.16/x
  3. Step 3: Cross multiply
    621,280.82x = 857,656.38 × 468,381.16
  4. Step 4: Simplify right side
    621,280.82x = 401,710,090,145.80
  5. Step 5: Solve for x
    x = 401,710,090,145.80/621,280.82
  6. Step 6: Final answer
    x = 646,583.76

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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.