Home / 12,781,332.60-19,171,998.90-9,925,985.40

Finding the Fourth Proportional to 12,781,332.60, 19,171,998.90 and 9,925,985.40

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Solution

The fourth proportional to 12,781,332.60, 19,171,998.90 and 9,925,985.40 is: 14,888,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781,332.60 : 19,171,998.90 = 9,925,985.40 : x
  2. Step 2: Convert to fraction form
    12,781,332.60/19,171,998.90 = 9,925,985.40/x
  3. Step 3: Cross multiply
    12,781,332.60x = 19,171,998.90 × 9,925,985.40
  4. Step 4: Simplify right side
    12,781,332.60x = 190,300,981,170,216.06
  5. Step 5: Solve for x
    x = 190,300,981,170,216.06/12,781,332.60
  6. Step 6: Final answer
    x = 14,888,978.10

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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.