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Finding the Fourth Proportional to 77,423.80, 106,840.46 and 45,602.96

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Solution

The fourth proportional to 77,423.80, 106,840.46 and 45,602.96 is: 62,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,423.80 : 106,840.46 = 45,602.96 : x
  2. Step 2: Convert to fraction form
    77,423.80/106,840.46 = 45,602.96/x
  3. Step 3: Cross multiply
    77,423.80x = 106,840.46 × 45,602.96
  4. Step 4: Simplify right side
    77,423.80x = 4,872,241,223.76
  5. Step 5: Solve for x
    x = 4,872,241,223.76/77,423.80
  6. Step 6: Final answer
    x = 62,929.50

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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.