Home / 21,006,479,606.10-28,989,633,292.86-11,490,813,595.56

Finding the Fourth Proportional to 21,006,479,606.10, 28,989,633,292.86 and 11,490,813,595.56

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Solution

The fourth proportional to 21,006,479,606.10, 28,989,633,292.86 and 11,490,813,595.56 is: 15,857,700,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006,479,606.10 : 28,989,633,292.86 = 11,490,813,595.56 : x
  2. Step 2: Convert to fraction form
    21,006,479,606.10/28,989,633,292.86 = 11,490,813,595.56/x
  3. Step 3: Cross multiply
    21,006,479,606.10x = 28,989,633,292.86 × 11,490,813,595.56
  4. Step 4: Simplify right side
    21,006,479,606.10x = 333,114,472,371,894,484,992
  5. Step 5: Solve for x
    x = 333,114,472,371,894,484,992/21,006,479,606.10
  6. Step 6: Final answer
    x = 15,857,700,986.47

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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.