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Finding the Fourth Proportional to 115,210.70, 172,925.40 and 70,923.95

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Solution

The fourth proportional to 115,210.70, 172,925.40 and 70,923.95 is: 106,453.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,210.70 : 172,925.40 = 70,923.95 : x
  2. Step 2: Convert to fraction form
    115,210.70/172,925.40 = 70,923.95/x
  3. Step 3: Cross multiply
    115,210.70x = 172,925.40 × 70,923.95
  4. Step 4: Simplify right side
    115,210.70x = 12,264,552,423.33
  5. Step 5: Solve for x
    x = 12,264,552,423.33/115,210.70
  6. Step 6: Final answer
    x = 106,453.24

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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.