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Finding the Fourth Proportional to 42,607,561.40, 63,911,342.10 and 42,607,561.40

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Solution

The fourth proportional to 42,607,561.40, 63,911,342.10 and 42,607,561.40 is: 63,911,342.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,607,561.40 : 63,911,342.10 = 42,607,561.40 : x
  2. Step 2: Convert to fraction form
    42,607,561.40/63,911,342.10 = 42,607,561.40/x
  3. Step 3: Cross multiply
    42,607,561.40x = 63,911,342.10 × 42,607,561.40
  4. Step 4: Simplify right side
    42,607,561.40x = 2,723,106,432,682,155
  5. Step 5: Solve for x
    x = 2,723,106,432,682,155/42,607,561.40
  6. Step 6: Final answer
    x = 63,911,342.10

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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.