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Finding the Fourth Proportional to 316,980,624.60, 442,865,881.80 and 316,980,624.60

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Solution

The fourth proportional to 316,980,624.60, 442,865,881.80 and 316,980,624.60 is: 442,865,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,980,624.60 : 442,865,881.80 = 316,980,624.60 : x
  2. Step 2: Convert to fraction form
    316,980,624.60/442,865,881.80 = 316,980,624.60/x
  3. Step 3: Cross multiply
    316,980,624.60x = 442,865,881.80 × 316,980,624.60
  4. Step 4: Simplify right side
    316,980,624.60x = 140,379,903,826,993,792
  5. Step 5: Solve for x
    x = 140,379,903,826,993,792/316,980,624.60
  6. Step 6: Final answer
    x = 442,865,881.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.