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Finding the Fourth Proportional to 319,881,626.92, 479,822,440.38 and 77,544,530.92

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Solution

The fourth proportional to 319,881,626.92, 479,822,440.38 and 77,544,530.92 is: 116,316,796.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,881,626.92 : 479,822,440.38 = 77,544,530.92 : x
  2. Step 2: Convert to fraction form
    319,881,626.92/479,822,440.38 = 77,544,530.92/x
  3. Step 3: Cross multiply
    319,881,626.92x = 479,822,440.38 × 77,544,530.92
  4. Step 4: Simplify right side
    319,881,626.92x = 37,207,606,064,156,768
  5. Step 5: Solve for x
    x = 37,207,606,064,156,768/319,881,626.92
  6. Step 6: Final answer
    x = 116,316,796.38

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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.