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Finding the Fourth Proportional to 474,875.76, 655,328.40 and 260,015.76

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Solution

The fourth proportional to 474,875.76, 655,328.40 and 260,015.76 is: 358,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,875.76 : 655,328.40 = 260,015.76 : x
  2. Step 2: Convert to fraction form
    474,875.76/655,328.40 = 260,015.76/x
  3. Step 3: Cross multiply
    474,875.76x = 655,328.40 × 260,015.76
  4. Step 4: Simplify right side
    474,875.76x = 170,395,711,975.58
  5. Step 5: Solve for x
    x = 170,395,711,975.58/474,875.76
  6. Step 6: Final answer
    x = 358,821.67

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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.