Home / 28,512,145.60-42,768,218.40-19,442,219.20

Finding the Fourth Proportional to 28,512,145.60, 42,768,218.40 and 19,442,219.20

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Solution

The fourth proportional to 28,512,145.60, 42,768,218.40 and 19,442,219.20 is: 29,163,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512,145.60 : 42,768,218.40 = 19,442,219.20 : x
  2. Step 2: Convert to fraction form
    28,512,145.60/42,768,218.40 = 19,442,219.20/x
  3. Step 3: Cross multiply
    28,512,145.60x = 42,768,218.40 × 19,442,219.20
  4. Step 4: Simplify right side
    28,512,145.60x = 831,509,076,926,273.25
  5. Step 5: Solve for x
    x = 831,509,076,926,273.25/28,512,145.60
  6. Step 6: Final answer
    x = 29,163,328.80

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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.