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Finding the Fourth Proportional to 76,041.90, 104,928.66 and 42,045.80

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Solution

The fourth proportional to 76,041.90, 104,928.66 and 42,045.80 is: 58,018.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,041.90 : 104,928.66 = 42,045.80 : x
  2. Step 2: Convert to fraction form
    76,041.90/104,928.66 = 42,045.80/x
  3. Step 3: Cross multiply
    76,041.90x = 104,928.66 × 42,045.80
  4. Step 4: Simplify right side
    76,041.90x = 4,411,808,927.98
  5. Step 5: Solve for x
    x = 4,411,808,927.98/76,041.90
  6. Step 6: Final answer
    x = 58,018.13

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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.