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Finding the Fourth Proportional to 77,802.40, 116,710.86 and 60,291.88

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Solution

The fourth proportional to 77,802.40, 116,710.86 and 60,291.88 is: 90,443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,802.40 : 116,710.86 = 60,291.88 : x
  2. Step 2: Convert to fraction form
    77,802.40/116,710.86 = 60,291.88/x
  3. Step 3: Cross multiply
    77,802.40x = 116,710.86 × 60,291.88
  4. Step 4: Simplify right side
    77,802.40x = 7,036,717,165.82
  5. Step 5: Solve for x
    x = 7,036,717,165.82/77,802.40
  6. Step 6: Final answer
    x = 90,443.45

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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.