Home / 85,009,506.30-127,514,259.45-79,970,658.30

Finding the Fourth Proportional to 85,009,506.30, 127,514,259.45 and 79,970,658.30

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Solution

The fourth proportional to 85,009,506.30, 127,514,259.45 and 79,970,658.30 is: 119,955,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,009,506.30 : 127,514,259.45 = 79,970,658.30 : x
  2. Step 2: Convert to fraction form
    85,009,506.30/127,514,259.45 = 79,970,658.30/x
  3. Step 3: Cross multiply
    85,009,506.30x = 127,514,259.45 × 79,970,658.30
  4. Step 4: Simplify right side
    85,009,506.30x = 10,197,399,270,853,496
  5. Step 5: Solve for x
    x = 10,197,399,270,853,496/85,009,506.30
  6. Step 6: Final answer
    x = 119,955,987.45

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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.