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Finding the Fourth Proportional to 152,859.80, 229,289.70 and 42,051.80

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Solution

The fourth proportional to 152,859.80, 229,289.70 and 42,051.80 is: 63,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,859.80 : 229,289.70 = 42,051.80 : x
  2. Step 2: Convert to fraction form
    152,859.80/229,289.70 = 42,051.80/x
  3. Step 3: Cross multiply
    152,859.80x = 229,289.70 × 42,051.80
  4. Step 4: Simplify right side
    152,859.80x = 9,642,044,606.46
  5. Step 5: Solve for x
    x = 9,642,044,606.46/152,859.80
  6. Step 6: Final answer
    x = 63,077.70

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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.