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Finding the Fourth Proportional to 76,866.39, 106,075.59 and 43,332.39

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Solution

The fourth proportional to 76,866.39, 106,075.59 and 43,332.39 is: 59,798.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,866.39 : 106,075.59 = 43,332.39 : x
  2. Step 2: Convert to fraction form
    76,866.39/106,075.59 = 43,332.39/x
  3. Step 3: Cross multiply
    76,866.39x = 106,075.59 × 43,332.39
  4. Step 4: Simplify right side
    76,866.39x = 4,596,508,835.36
  5. Step 5: Solve for x
    x = 4,596,508,835.36/76,866.39
  6. Step 6: Final answer
    x = 59,798.68

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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.