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Finding the Fourth Proportional to 352,602,805.80, 528,904,208.70 and 255,856,924.20

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Solution

The fourth proportional to 352,602,805.80, 528,904,208.70 and 255,856,924.20 is: 383,785,386.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,602,805.80 : 528,904,208.70 = 255,856,924.20 : x
  2. Step 2: Convert to fraction form
    352,602,805.80/528,904,208.70 = 255,856,924.20/x
  3. Step 3: Cross multiply
    352,602,805.80x = 528,904,208.70 × 255,856,924.20
  4. Step 4: Simplify right side
    352,602,805.80x = 135,323,804,034,416,864
  5. Step 5: Solve for x
    x = 135,323,804,034,416,864/352,602,805.80
  6. Step 6: Final answer
    x = 383,785,386.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.