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Finding the Fourth Proportional to 556,288.49, 838,602.13 and 519,211.78

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Solution

The fourth proportional to 556,288.49, 838,602.13 and 519,211.78 is: 782,709.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,288.49 : 838,602.13 = 519,211.78 : x
  2. Step 2: Convert to fraction form
    556,288.49/838,602.13 = 519,211.78/x
  3. Step 3: Cross multiply
    556,288.49x = 838,602.13 × 519,211.78
  4. Step 4: Simplify right side
    556,288.49x = 435,412,101,234.56
  5. Step 5: Solve for x
    x = 435,412,101,234.56/556,288.49
  6. Step 6: Final answer
    x = 782,709.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.