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Finding the Fourth Proportional to 100,539,938.80, 150,809,908.20 and 49,521,602.80

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Solution

The fourth proportional to 100,539,938.80, 150,809,908.20 and 49,521,602.80 is: 74,282,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,539,938.80 : 150,809,908.20 = 49,521,602.80 : x
  2. Step 2: Convert to fraction form
    100,539,938.80/150,809,908.20 = 49,521,602.80/x
  3. Step 3: Cross multiply
    100,539,938.80x = 150,809,908.20 × 49,521,602.80
  4. Step 4: Simplify right side
    100,539,938.80x = 7,468,348,372,184,862
  5. Step 5: Solve for x
    x = 7,468,348,372,184,862/100,539,938.80
  6. Step 6: Final answer
    x = 74,282,404.20

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1.5x scale

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.