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Finding the Fourth Proportional to 85,509.99, 118,036.71 and 76,541.67

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Solution

The fourth proportional to 85,509.99, 118,036.71 and 76,541.67 is: 105,656.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,509.99 : 118,036.71 = 76,541.67 : x
  2. Step 2: Convert to fraction form
    85,509.99/118,036.71 = 76,541.67/x
  3. Step 3: Cross multiply
    85,509.99x = 118,036.71 × 76,541.67
  4. Step 4: Simplify right side
    85,509.99x = 9,034,726,904.71
  5. Step 5: Solve for x
    x = 9,034,726,904.71/85,509.99
  6. Step 6: Final answer
    x = 105,656.98

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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.