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Finding the Fourth Proportional to 128,030.51, 176,748.53 and 93,536.55

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Solution

The fourth proportional to 128,030.51, 176,748.53 and 93,536.55 is: 129,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,030.51 : 176,748.53 = 93,536.55 : x
  2. Step 2: Convert to fraction form
    128,030.51/176,748.53 = 93,536.55/x
  3. Step 3: Cross multiply
    128,030.51x = 176,748.53 × 93,536.55
  4. Step 4: Simplify right side
    128,030.51x = 16,532,447,246.09
  5. Step 5: Solve for x
    x = 16,532,447,246.09/128,030.51
  6. Step 6: Final answer
    x = 129,128.97

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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.