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Finding the Fourth Proportional to 85,110,777.60, 127,666,166.40 and 85,110,777.60

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Solution

The fourth proportional to 85,110,777.60, 127,666,166.40 and 85,110,777.60 is: 127,666,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,110,777.60 : 127,666,166.40 = 85,110,777.60 : x
  2. Step 2: Convert to fraction form
    85,110,777.60/127,666,166.40 = 85,110,777.60/x
  3. Step 3: Cross multiply
    85,110,777.60x = 127,666,166.40 × 85,110,777.60
  4. Step 4: Simplify right side
    85,110,777.60x = 10,865,766,695,514,992
  5. Step 5: Solve for x
    x = 10,865,766,695,514,992/85,110,777.60
  6. Step 6: Final answer
    x = 127,666,166.40

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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.