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Finding the Fourth Proportional to 66,687.98, 99,920.88 and 46,925.01

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Solution

The fourth proportional to 66,687.98, 99,920.88 and 46,925.01 is: 70,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,687.98 : 99,920.88 = 46,925.01 : x
  2. Step 2: Convert to fraction form
    66,687.98/99,920.88 = 46,925.01/x
  3. Step 3: Cross multiply
    66,687.98x = 99,920.88 × 46,925.01
  4. Step 4: Simplify right side
    66,687.98x = 4,688,788,293.21
  5. Step 5: Solve for x
    x = 4,688,788,293.21/66,687.98
  6. Step 6: Final answer
    x = 70,309.35

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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.