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Finding the Fourth Proportional to 186,699.60, 257,648.88 and 101,816.40

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Solution

The fourth proportional to 186,699.60, 257,648.88 and 101,816.40 is: 140,508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,699.60 : 257,648.88 = 101,816.40 : x
  2. Step 2: Convert to fraction form
    186,699.60/257,648.88 = 101,816.40/x
  3. Step 3: Cross multiply
    186,699.60x = 257,648.88 × 101,816.40
  4. Step 4: Simplify right side
    186,699.60x = 26,232,881,425.63
  5. Step 5: Solve for x
    x = 26,232,881,425.63/186,699.60
  6. Step 6: Final answer
    x = 140,508.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.