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Finding the Fourth Proportional to 519,444,186, 716,855,509.80 and 287,657,178

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Solution

The fourth proportional to 519,444,186, 716,855,509.80 and 287,657,178 is: 396,979,384.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,444,186 : 716,855,509.80 = 287,657,178 : x
  2. Step 2: Convert to fraction form
    519,444,186/716,855,509.80 = 287,657,178/x
  3. Step 3: Cross multiply
    519,444,186x = 716,855,509.80 × 287,657,178
  4. Step 4: Simplify right side
    519,444,186x = 206,208,632,982,819,328
  5. Step 5: Solve for x
    x = 206,208,632,982,819,328/519,444,186
  6. Step 6: Final answer
    x = 396,979,384.00

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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.