Home / 128,004.76-176,655.06-71,417.34

Finding the Fourth Proportional to 128,004.76, 176,655.06 and 71,417.34

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Solution

The fourth proportional to 128,004.76, 176,655.06 and 71,417.34 is: 98,560.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,004.76 : 176,655.06 = 71,417.34 : x
  2. Step 2: Convert to fraction form
    128,004.76/176,655.06 = 71,417.34/x
  3. Step 3: Cross multiply
    128,004.76x = 176,655.06 × 71,417.34
  4. Step 4: Simplify right side
    128,004.76x = 12,616,234,482.74
  5. Step 5: Solve for x
    x = 12,616,234,482.74/128,004.76
  6. Step 6: Final answer
    x = 98,560.67

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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.