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Finding the Fourth Proportional to 18,922,259.95, 26,124,061.95 and 12,407,254.57

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Solution

The fourth proportional to 18,922,259.95, 26,124,061.95 and 12,407,254.57 is: 17,129,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922,259.95 : 26,124,061.95 = 12,407,254.57 : x
  2. Step 2: Convert to fraction form
    18,922,259.95/26,124,061.95 = 12,407,254.57/x
  3. Step 3: Cross multiply
    18,922,259.95x = 26,124,061.95 × 12,407,254.57
  4. Step 4: Simplify right side
    18,922,259.95x = 324,127,887,016,100.62
  5. Step 5: Solve for x
    x = 324,127,887,016,100.62/18,922,259.95
  6. Step 6: Final answer
    x = 17,129,449.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.