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Finding the Fourth Proportional to 88,095.94, 121,572.80 and 47,809.69

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Solution

The fourth proportional to 88,095.94, 121,572.80 and 47,809.69 is: 65,977.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,095.94 : 121,572.80 = 47,809.69 : x
  2. Step 2: Convert to fraction form
    88,095.94/121,572.80 = 47,809.69/x
  3. Step 3: Cross multiply
    88,095.94x = 121,572.80 × 47,809.69
  4. Step 4: Simplify right side
    88,095.94x = 5,812,357,880.43
  5. Step 5: Solve for x
    x = 5,812,357,880.43/88,095.94
  6. Step 6: Final answer
    x = 65,977.59

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1.5x scale

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.