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Finding the Fourth Proportional to 418,838.83, 623,521.08 and 416,347.72

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Solution

The fourth proportional to 418,838.83, 623,521.08 and 416,347.72 is: 619,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,838.83 : 623,521.08 = 416,347.72 : x
  2. Step 2: Convert to fraction form
    418,838.83/623,521.08 = 416,347.72/x
  3. Step 3: Cross multiply
    418,838.83x = 623,521.08 × 416,347.72
  4. Step 4: Simplify right side
    418,838.83x = 259,601,578,471.14
  5. Step 5: Solve for x
    x = 259,601,578,471.14/418,838.83
  6. Step 6: Final answer
    x = 619,812.59

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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.