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Finding the Fourth Proportional to 100,602,318.30, 150,903,477.45 and 86,253,411.30

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Solution

The fourth proportional to 100,602,318.30, 150,903,477.45 and 86,253,411.30 is: 129,380,116.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,602,318.30 : 150,903,477.45 = 86,253,411.30 : x
  2. Step 2: Convert to fraction form
    100,602,318.30/150,903,477.45 = 86,253,411.30/x
  3. Step 3: Cross multiply
    100,602,318.30x = 150,903,477.45 × 86,253,411.30
  4. Step 4: Simplify right side
    100,602,318.30x = 13,015,939,707,095,124
  5. Step 5: Solve for x
    x = 13,015,939,707,095,124/100,602,318.30
  6. Step 6: Final answer
    x = 129,380,116.95

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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.