Home / 105,428,942.60-145,490,819.10-59,019,577.88

Finding the Fourth Proportional to 105,428,942.60, 145,490,819.10 and 59,019,577.88

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Solution

The fourth proportional to 105,428,942.60, 145,490,819.10 and 59,019,577.88 is: 81,446,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,428,942.60 : 145,490,819.10 = 59,019,577.88 : x
  2. Step 2: Convert to fraction form
    105,428,942.60/145,490,819.10 = 59,019,577.88/x
  3. Step 3: Cross multiply
    105,428,942.60x = 145,490,819.10 × 59,019,577.88
  4. Step 4: Simplify right side
    105,428,942.60x = 8,586,806,728,697,442
  5. Step 5: Solve for x
    x = 8,586,806,728,697,442/105,428,942.60
  6. Step 6: Final answer
    x = 81,446,389.55

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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.