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Finding the Fourth Proportional to 245,470.50, 368,210.23 and 76,987.06

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Solution

The fourth proportional to 245,470.50, 368,210.23 and 76,987.06 is: 115,482.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,470.50 : 368,210.23 = 76,987.06 : x
  2. Step 2: Convert to fraction form
    245,470.50/368,210.23 = 76,987.06/x
  3. Step 3: Cross multiply
    245,470.50x = 368,210.23 × 76,987.06
  4. Step 4: Simplify right side
    245,470.50x = 28,347,423,069.62
  5. Step 5: Solve for x
    x = 28,347,423,069.62/245,470.50
  6. Step 6: Final answer
    x = 115,482.00

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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.