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Finding the Fourth Proportional to 554,955,919.37, 765,809,890.99 and 316,791,640.93

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Solution

The fourth proportional to 554,955,919.37, 765,809,890.99 and 316,791,640.93 is: 437,155,751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,955,919.37 : 765,809,890.99 = 316,791,640.93 : x
  2. Step 2: Convert to fraction form
    554,955,919.37/765,809,890.99 = 316,791,640.93/x
  3. Step 3: Cross multiply
    554,955,919.37x = 765,809,890.99 × 316,791,640.93
  4. Step 4: Simplify right side
    554,955,919.37x = 242,602,172,007,146,528
  5. Step 5: Solve for x
    x = 242,602,172,007,146,528/554,955,919.37
  6. Step 6: Final answer
    x = 437,155,751.55

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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.