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Finding the Fourth Proportional to 541,405.80, 812,159.90 and 147,421.80

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Solution

The fourth proportional to 541,405.80, 812,159.90 and 147,421.80 is: 221,146.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,405.80 : 812,159.90 = 147,421.80 : x
  2. Step 2: Convert to fraction form
    541,405.80/812,159.90 = 147,421.80/x
  3. Step 3: Cross multiply
    541,405.80x = 812,159.90 × 147,421.80
  4. Step 4: Simplify right side
    541,405.80x = 119,730,074,345.82
  5. Step 5: Solve for x
    x = 119,730,074,345.82/541,405.80
  6. Step 6: Final answer
    x = 221,146.64

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1.5x scale

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.