Home / 85,440,355.80-128,160,533.70-27,938,439.60

Finding the Fourth Proportional to 85,440,355.80, 128,160,533.70 and 27,938,439.60

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Solution

The fourth proportional to 85,440,355.80, 128,160,533.70 and 27,938,439.60 is: 41,907,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,440,355.80 : 128,160,533.70 = 27,938,439.60 : x
  2. Step 2: Convert to fraction form
    85,440,355.80/128,160,533.70 = 27,938,439.60/x
  3. Step 3: Cross multiply
    85,440,355.80x = 128,160,533.70 × 27,938,439.60
  4. Step 4: Simplify right side
    85,440,355.80x = 3,580,605,329,881,215
  5. Step 5: Solve for x
    x = 3,580,605,329,881,215/85,440,355.80
  6. Step 6: Final answer
    x = 41,907,659.40

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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.