Home / 66,078,010.20-99,117,015.30-40,249,977.60

Finding the Fourth Proportional to 66,078,010.20, 99,117,015.30 and 40,249,977.60

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Solution

The fourth proportional to 66,078,010.20, 99,117,015.30 and 40,249,977.60 is: 60,374,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,078,010.20 : 99,117,015.30 = 40,249,977.60 : x
  2. Step 2: Convert to fraction form
    66,078,010.20/99,117,015.30 = 40,249,977.60/x
  3. Step 3: Cross multiply
    66,078,010.20x = 99,117,015.30 × 40,249,977.60
  4. Step 4: Simplify right side
    66,078,010.20x = 3,989,457,645,603,857.50
  5. Step 5: Solve for x
    x = 3,989,457,645,603,857.50/66,078,010.20
  6. Step 6: Final answer
    x = 60,374,966.40

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Double scale
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Similar ratio
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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.