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Finding the Fourth Proportional to 60,639,002.60, 90,958,503.90 and 55,962,321.80

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Solution

The fourth proportional to 60,639,002.60, 90,958,503.90 and 55,962,321.80 is: 83,943,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,639,002.60 : 90,958,503.90 = 55,962,321.80 : x
  2. Step 2: Convert to fraction form
    60,639,002.60/90,958,503.90 = 55,962,321.80/x
  3. Step 3: Cross multiply
    60,639,002.60x = 90,958,503.90 × 55,962,321.80
  4. Step 4: Simplify right side
    60,639,002.60x = 5,090,249,065,698,355
  5. Step 5: Solve for x
    x = 5,090,249,065,698,355/60,639,002.60
  6. Step 6: Final answer
    x = 83,943,482.70

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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.