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Finding the Fourth Proportional to 357,076.16, 535,617.92 and 90,836.80

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Solution

The fourth proportional to 357,076.16, 535,617.92 and 90,836.80 is: 136,256.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,076.16 : 535,617.92 = 90,836.80 : x
  2. Step 2: Convert to fraction form
    357,076.16/535,617.92 = 90,836.80/x
  3. Step 3: Cross multiply
    357,076.16x = 535,617.92 × 90,836.80
  4. Step 4: Simplify right side
    357,076.16x = 48,653,817,875.46
  5. Step 5: Solve for x
    x = 48,653,817,875.46/357,076.16
  6. Step 6: Final answer
    x = 136,256.14

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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.