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Finding the Fourth Proportional to 141,390.87, 212,041.35 and 46,603.40

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Solution

The fourth proportional to 141,390.87, 212,041.35 and 46,603.40 is: 69,890.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,390.87 : 212,041.35 = 46,603.40 : x
  2. Step 2: Convert to fraction form
    141,390.87/212,041.35 = 46,603.40/x
  3. Step 3: Cross multiply
    141,390.87x = 212,041.35 × 46,603.40
  4. Step 4: Simplify right side
    141,390.87x = 9,881,846,790.38
  5. Step 5: Solve for x
    x = 9,881,846,790.38/141,390.87
  6. Step 6: Final answer
    x = 69,890.28

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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.