Home / 81,570,461,775.50-111,751,931,383.54-78,513,220,043.92

Finding the Fourth Proportional to 81,570,461,775.50, 111,751,931,383.54 and 78,513,220,043.92

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Solution

The fourth proportional to 81,570,461,775.50, 111,751,931,383.54 and 78,513,220,043.92 is: 107,563,495,266.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,570,461,775.50 : 111,751,931,383.54 = 78,513,220,043.92 : x
  2. Step 2: Convert to fraction form
    81,570,461,775.50/111,751,931,383.54 = 78,513,220,043.92/x
  3. Step 3: Cross multiply
    81,570,461,775.50x = 111,751,931,383.54 × 78,513,220,043.92
  4. Step 4: Simplify right side
    81,570,461,775.50x = 8,774,003,979,049,037,201,408
  5. Step 5: Solve for x
    x = 8,774,003,979,049,037,201,408/81,570,461,775.50
  6. Step 6: Final answer
    x = 107,563,495,266.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.