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Finding the Fourth Proportional to 554,955,918.37, 765,809,889.62 and 316,791,639.93

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Solution

The fourth proportional to 554,955,918.37, 765,809,889.62 and 316,791,639.93 is: 437,155,750.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,955,918.37 : 765,809,889.62 = 316,791,639.93 : x
  2. Step 2: Convert to fraction form
    554,955,918.37/765,809,889.62 = 316,791,639.93/x
  3. Step 3: Cross multiply
    554,955,918.37x = 765,809,889.62 × 316,791,639.93
  4. Step 4: Simplify right side
    554,955,918.37x = 242,602,170,808,627,552
  5. Step 5: Solve for x
    x = 242,602,170,808,627,552/554,955,918.37
  6. Step 6: Final answer
    x = 437,155,750.18

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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.