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Finding the Fourth Proportional to 186,312.76, 257,111.42 and 101,429.82

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Solution

The fourth proportional to 186,312.76, 257,111.42 and 101,429.82 is: 139,973.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,312.76 : 257,111.42 = 101,429.82 : x
  2. Step 2: Convert to fraction form
    186,312.76/257,111.42 = 101,429.82/x
  3. Step 3: Cross multiply
    186,312.76x = 257,111.42 × 101,429.82
  4. Step 4: Simplify right side
    186,312.76x = 26,078,764,543.40
  5. Step 5: Solve for x
    x = 26,078,764,543.40/186,312.76
  6. Step 6: Final answer
    x = 139,973.05

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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.