Home / 28,068,290.99-38,772,153.15-21,151,254.17

Finding the Fourth Proportional to 28,068,290.99, 38,772,153.15 and 21,151,254.17

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Solution

The fourth proportional to 28,068,290.99, 38,772,153.15 and 21,151,254.17 is: 29,217,299.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,068,290.99 : 38,772,153.15 = 21,151,254.17 : x
  2. Step 2: Convert to fraction form
    28,068,290.99/38,772,153.15 = 21,151,254.17/x
  3. Step 3: Cross multiply
    28,068,290.99x = 38,772,153.15 × 21,151,254.17
  4. Step 4: Simplify right side
    28,068,290.99x = 820,079,665,799,955.25
  5. Step 5: Solve for x
    x = 820,079,665,799,955.25/28,068,290.99
  6. Step 6: Final answer
    x = 29,217,299.56

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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.