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Finding the Fourth Proportional to 553,095.21, 829,638.18 and 153,734.81

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Solution

The fourth proportional to 553,095.21, 829,638.18 and 153,734.81 is: 230,600.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,095.21 : 829,638.18 = 153,734.81 : x
  2. Step 2: Convert to fraction form
    553,095.21/829,638.18 = 153,734.81/x
  3. Step 3: Cross multiply
    553,095.21x = 829,638.18 × 153,734.81
  4. Step 4: Simplify right side
    553,095.21x = 127,544,267,971.05
  5. Step 5: Solve for x
    x = 127,544,267,971.05/553,095.21
  6. Step 6: Final answer
    x = 230,600.93

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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.