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Finding the Fourth Proportional to 60,659,611.20, 90,989,416.80 and 60,659,611.20

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Solution

The fourth proportional to 60,659,611.20, 90,989,416.80 and 60,659,611.20 is: 90,989,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,659,611.20 : 90,989,416.80 = 60,659,611.20 : x
  2. Step 2: Convert to fraction form
    60,659,611.20/90,989,416.80 = 60,659,611.20/x
  3. Step 3: Cross multiply
    60,659,611.20x = 90,989,416.80 × 60,659,611.20
  4. Step 4: Simplify right side
    60,659,611.20x = 5,519,382,646,402,748
  5. Step 5: Solve for x
    x = 5,519,382,646,402,748/60,659,611.20
  6. Step 6: Final answer
    x = 90,989,416.80

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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.