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Finding the Fourth Proportional to 261,655.80, 392,485.20 and 93,182.70

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Solution

The fourth proportional to 261,655.80, 392,485.20 and 93,182.70 is: 139,774.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,655.80 : 392,485.20 = 93,182.70 : x
  2. Step 2: Convert to fraction form
    261,655.80/392,485.20 = 93,182.70/x
  3. Step 3: Cross multiply
    261,655.80x = 392,485.20 × 93,182.70
  4. Step 4: Simplify right side
    261,655.80x = 36,572,830,646.04
  5. Step 5: Solve for x
    x = 36,572,830,646.04/261,655.80
  6. Step 6: Final answer
    x = 139,774.58

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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.