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Finding the Fourth Proportional to 416,282.21, 621,411.16 and 365,838.15

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Solution

The fourth proportional to 416,282.21, 621,411.16 and 365,838.15 is: 546,110.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,282.21 : 621,411.16 = 365,838.15 : x
  2. Step 2: Convert to fraction form
    416,282.21/621,411.16 = 365,838.15/x
  3. Step 3: Cross multiply
    416,282.21x = 621,411.16 × 365,838.15
  4. Step 4: Simplify right side
    416,282.21x = 227,335,908,249.16
  5. Step 5: Solve for x
    x = 227,335,908,249.16/416,282.21
  6. Step 6: Final answer
    x = 546,110.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.