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Finding the Fourth Proportional to 99,649,000.10, 149,473,500.15 and 91,039,655.90

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Solution

The fourth proportional to 99,649,000.10, 149,473,500.15 and 91,039,655.90 is: 136,559,483.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,649,000.10 : 149,473,500.15 = 91,039,655.90 : x
  2. Step 2: Convert to fraction form
    99,649,000.10/149,473,500.15 = 91,039,655.90/x
  3. Step 3: Cross multiply
    99,649,000.10x = 149,473,500.15 × 91,039,655.90
  4. Step 4: Simplify right side
    99,649,000.10x = 13,608,016,019,824,600
  5. Step 5: Solve for x
    x = 13,608,016,019,824,600/99,649,000.10
  6. Step 6: Final answer
    x = 136,559,483.85

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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.