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Finding the Fourth Proportional to 317,668,053.80, 476,502,080.70 and 87,636,769.40

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Solution

The fourth proportional to 317,668,053.80, 476,502,080.70 and 87,636,769.40 is: 131,455,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,668,053.80 : 476,502,080.70 = 87,636,769.40 : x
  2. Step 2: Convert to fraction form
    317,668,053.80/476,502,080.70 = 87,636,769.40/x
  3. Step 3: Cross multiply
    317,668,053.80x = 476,502,080.70 × 87,636,769.40
  4. Step 4: Simplify right side
    317,668,053.80x = 41,759,102,964,926,096
  5. Step 5: Solve for x
    x = 41,759,102,964,926,096/317,668,053.80
  6. Step 6: Final answer
    x = 131,455,154.10

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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.