Home / 70,128,811.80-105,193,217.70-39,517,810.20

Finding the Fourth Proportional to 70,128,811.80, 105,193,217.70 and 39,517,810.20

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Solution

The fourth proportional to 70,128,811.80, 105,193,217.70 and 39,517,810.20 is: 59,276,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,128,811.80 : 105,193,217.70 = 39,517,810.20 : x
  2. Step 2: Convert to fraction form
    70,128,811.80/105,193,217.70 = 39,517,810.20/x
  3. Step 3: Cross multiply
    70,128,811.80x = 105,193,217.70 × 39,517,810.20
  4. Step 4: Simplify right side
    70,128,811.80x = 4,157,005,611,395,881
  5. Step 5: Solve for x
    x = 4,157,005,611,395,881/70,128,811.80
  6. Step 6: Final answer
    x = 59,276,715.30

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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.