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Finding the Fourth Proportional to 157,230.86, 216,973.53 and 85,610.30

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Solution

The fourth proportional to 157,230.86, 216,973.53 and 85,610.30 is: 118,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,230.86 : 216,973.53 = 85,610.30 : x
  2. Step 2: Convert to fraction form
    157,230.86/216,973.53 = 85,610.30/x
  3. Step 3: Cross multiply
    157,230.86x = 216,973.53 × 85,610.30
  4. Step 4: Simplify right side
    157,230.86x = 18,575,168,995.36
  5. Step 5: Solve for x
    x = 18,575,168,995.36/157,230.86
  6. Step 6: Final answer
    x = 118,139.46

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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.