Home / 12,457,056.80-18,685,585.20-12,289,095.20

Finding the Fourth Proportional to 12,457,056.80, 18,685,585.20 and 12,289,095.20

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Solution

The fourth proportional to 12,457,056.80, 18,685,585.20 and 12,289,095.20 is: 18,433,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,056.80 : 18,685,585.20 = 12,289,095.20 : x
  2. Step 2: Convert to fraction form
    12,457,056.80/18,685,585.20 = 12,289,095.20/x
  3. Step 3: Cross multiply
    12,457,056.80x = 18,685,585.20 × 12,289,095.20
  4. Step 4: Simplify right side
    12,457,056.80x = 229,628,935,390,511.03
  5. Step 5: Solve for x
    x = 229,628,935,390,511.03/12,457,056.80
  6. Step 6: Final answer
    x = 18,433,642.80

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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.