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Finding the Fourth Proportional to 60,428,750.75, 90,634,019.34 and 38,720,826.24

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Solution

The fourth proportional to 60,428,750.75, 90,634,019.34 and 38,720,826.24 is: 58,075,404.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,428,750.75 : 90,634,019.34 = 38,720,826.24 : x
  2. Step 2: Convert to fraction form
    60,428,750.75/90,634,019.34 = 38,720,826.24/x
  3. Step 3: Cross multiply
    60,428,750.75x = 90,634,019.34 × 38,720,826.24
  4. Step 4: Simplify right side
    60,428,750.75x = 3,509,424,114,296,940
  5. Step 5: Solve for x
    x = 3,509,424,114,296,940/60,428,750.75
  6. Step 6: Final answer
    x = 58,075,404.02

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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.