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Finding the Fourth Proportional to 169,639,409.60, 254,459,114.40 and 157,168,260.80

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Solution

The fourth proportional to 169,639,409.60, 254,459,114.40 and 157,168,260.80 is: 235,752,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,639,409.60 : 254,459,114.40 = 157,168,260.80 : x
  2. Step 2: Convert to fraction form
    169,639,409.60/254,459,114.40 = 157,168,260.80/x
  3. Step 3: Cross multiply
    169,639,409.60x = 254,459,114.40 × 157,168,260.80
  4. Step 4: Simplify right side
    169,639,409.60x = 39,992,896,454,956,240
  5. Step 5: Solve for x
    x = 39,992,896,454,956,240/169,639,409.60
  6. Step 6: Final answer
    x = 235,752,391.20

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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.