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Finding the Fourth Proportional to 1,158,861.20, 1,736,218.20 and 992,973.20

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Solution

The fourth proportional to 1,158,861.20, 1,736,218.20 and 992,973.20 is: 1,487,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158,861.20 : 1,736,218.20 = 992,973.20 : x
  2. Step 2: Convert to fraction form
    1,158,861.20/1,736,218.20 = 992,973.20/x
  3. Step 3: Cross multiply
    1,158,861.20x = 1,736,218.20 × 992,973.20
  4. Step 4: Simplify right side
    1,158,861.20x = 1,724,018,141,952.24
  5. Step 5: Solve for x
    x = 1,724,018,141,952.24/1,158,861.20
  6. Step 6: Final answer
    x = 1,487,683.03

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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.