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Finding the Fourth Proportional to 86,117.76, 129,143.88 and 56,527.74

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Solution

The fourth proportional to 86,117.76, 129,143.88 and 56,527.74 is: 84,770.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,117.76 : 129,143.88 = 56,527.74 : x
  2. Step 2: Convert to fraction form
    86,117.76/129,143.88 = 56,527.74/x
  3. Step 3: Cross multiply
    86,117.76x = 129,143.88 × 56,527.74
  4. Step 4: Simplify right side
    86,117.76x = 7,300,211,671.23
  5. Step 5: Solve for x
    x = 7,300,211,671.23/86,117.76
  6. Step 6: Final answer
    x = 84,770.11

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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.