Home / 85,800,623.70-128,700,935.55-51,363,246.90

Finding the Fourth Proportional to 85,800,623.70, 128,700,935.55 and 51,363,246.90

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Solution

The fourth proportional to 85,800,623.70, 128,700,935.55 and 51,363,246.90 is: 77,044,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,800,623.70 : 128,700,935.55 = 51,363,246.90 : x
  2. Step 2: Convert to fraction form
    85,800,623.70/128,700,935.55 = 51,363,246.90/x
  3. Step 3: Cross multiply
    85,800,623.70x = 128,700,935.55 × 51,363,246.90
  4. Step 4: Simplify right side
    85,800,623.70x = 6,610,497,928,915,637
  5. Step 5: Solve for x
    x = 6,610,497,928,915,637/85,800,623.70
  6. Step 6: Final answer
    x = 77,044,870.35

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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.