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Finding the Fourth Proportional to 391,176,015.60, 586,764,023.40 and 391,176,015.60

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Solution

The fourth proportional to 391,176,015.60, 586,764,023.40 and 391,176,015.60 is: 586,764,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,176,015.60 : 586,764,023.40 = 391,176,015.60 : x
  2. Step 2: Convert to fraction form
    391,176,015.60/586,764,023.40 = 391,176,015.60/x
  3. Step 3: Cross multiply
    391,176,015.60x = 586,764,023.40 × 391,176,015.60
  4. Step 4: Simplify right side
    391,176,015.60x = 229,528,012,771,037,184
  5. Step 5: Solve for x
    x = 229,528,012,771,037,184/391,176,015.60
  6. Step 6: Final answer
    x = 586,764,023.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.