Home / 85,536,043.20-128,304,064.80-28,030,190.40

Finding the Fourth Proportional to 85,536,043.20, 128,304,064.80 and 28,030,190.40

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Solution

The fourth proportional to 85,536,043.20, 128,304,064.80 and 28,030,190.40 is: 42,045,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,043.20 : 128,304,064.80 = 28,030,190.40 : x
  2. Step 2: Convert to fraction form
    85,536,043.20/128,304,064.80 = 28,030,190.40/x
  3. Step 3: Cross multiply
    85,536,043.20x = 128,304,064.80 × 28,030,190.40
  4. Step 4: Simplify right side
    85,536,043.20x = 3,596,387,365,437,937.50
  5. Step 5: Solve for x
    x = 3,596,387,365,437,937.50/85,536,043.20
  6. Step 6: Final answer
    x = 42,045,285.60

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Similar ratio
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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.