Home / 12,597,638.40-18,896,457.60-12,387,686.40

Finding the Fourth Proportional to 12,597,638.40, 18,896,457.60 and 12,387,686.40

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Solution

The fourth proportional to 12,597,638.40, 18,896,457.60 and 12,387,686.40 is: 18,581,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,597,638.40 : 18,896,457.60 = 12,387,686.40 : x
  2. Step 2: Convert to fraction form
    12,597,638.40/18,896,457.60 = 12,387,686.40/x
  3. Step 3: Cross multiply
    12,597,638.40x = 18,896,457.60 × 12,387,686.40
  4. Step 4: Simplify right side
    12,597,638.40x = 234,083,390,819,696.66
  5. Step 5: Solve for x
    x = 234,083,390,819,696.66/12,597,638.40
  6. Step 6: Final answer
    x = 18,581,529.60

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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.