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Finding the Fourth Proportional to 43,889,654.79, 65,786,963.69 and 28,547,908.11

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Solution

The fourth proportional to 43,889,654.79, 65,786,963.69 and 28,547,908.11 is: 42,790,953.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,889,654.79 : 65,786,963.69 = 28,547,908.11 : x
  2. Step 2: Convert to fraction form
    43,889,654.79/65,786,963.69 = 28,547,908.11/x
  3. Step 3: Cross multiply
    43,889,654.79x = 65,786,963.69 × 28,547,908.11
  4. Step 4: Simplify right side
    43,889,654.79x = 1,878,080,194,168,814.25
  5. Step 5: Solve for x
    x = 1,878,080,194,168,814.25/43,889,654.79
  6. Step 6: Final answer
    x = 42,790,953.89

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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.