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Finding the Fourth Proportional to 875,073,340.80, 1,312,610,011.20 and 875,073,340.80

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Solution

The fourth proportional to 875,073,340.80, 1,312,610,011.20 and 875,073,340.80 is: 1,312,610,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,073,340.80 : 1,312,610,011.20 = 875,073,340.80 : x
  2. Step 2: Convert to fraction form
    875,073,340.80/1,312,610,011.20 = 875,073,340.80/x
  3. Step 3: Cross multiply
    875,073,340.80x = 1,312,610,011.20 × 875,073,340.80
  4. Step 4: Simplify right side
    875,073,340.80x = 1,148,630,027,668,309,376
  5. Step 5: Solve for x
    x = 1,148,630,027,668,309,376/875,073,340.80
  6. Step 6: Final answer
    x = 1,312,610,011.20

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1.5x scale

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.