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Finding the Fourth Proportional to 156,878.52, 216,510.78 and 93,216.36

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Solution

The fourth proportional to 156,878.52, 216,510.78 and 93,216.36 is: 128,649.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,878.52 : 216,510.78 = 93,216.36 : x
  2. Step 2: Convert to fraction form
    156,878.52/216,510.78 = 93,216.36/x
  3. Step 3: Cross multiply
    156,878.52x = 216,510.78 × 93,216.36
  4. Step 4: Simplify right side
    156,878.52x = 20,182,346,812.36
  5. Step 5: Solve for x
    x = 20,182,346,812.36/156,878.52
  6. Step 6: Final answer
    x = 128,649.52

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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.