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Finding the Fourth Proportional to 46,920.60, 70,368.60 and 13,631.76

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Solution

The fourth proportional to 46,920.60, 70,368.60 and 13,631.76 is: 20,444.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,920.60 : 70,368.60 = 13,631.76 : x
  2. Step 2: Convert to fraction form
    46,920.60/70,368.60 = 13,631.76/x
  3. Step 3: Cross multiply
    46,920.60x = 70,368.60 × 13,631.76
  4. Step 4: Simplify right side
    46,920.60x = 959,247,866.74
  5. Step 5: Solve for x
    x = 959,247,866.74/46,920.60
  6. Step 6: Final answer
    x = 20,444.07

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1.5x scale

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.