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Finding the Fourth Proportional to 99,816,000.10, 149,724,000.15 and 85,203,340.90

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Solution

The fourth proportional to 99,816,000.10, 149,724,000.15 and 85,203,340.90 is: 127,805,011.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,816,000.10 : 149,724,000.15 = 85,203,340.90 : x
  2. Step 2: Convert to fraction form
    99,816,000.10/149,724,000.15 = 85,203,340.90/x
  3. Step 3: Cross multiply
    99,816,000.10x = 149,724,000.15 × 85,203,340.90
  4. Step 4: Simplify right side
    99,816,000.10x = 12,756,985,025,692,102
  5. Step 5: Solve for x
    x = 12,756,985,025,692,102/99,816,000.10
  6. Step 6: Final answer
    x = 127,805,011.35

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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.