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Finding the Fourth Proportional to 651,630,699.20, 977,446,048.80 and 651,630,699.20

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Solution

The fourth proportional to 651,630,699.20, 977,446,048.80 and 651,630,699.20 is: 977,446,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,630,699.20 : 977,446,048.80 = 651,630,699.20 : x
  2. Step 2: Convert to fraction form
    651,630,699.20/977,446,048.80 = 651,630,699.20/x
  3. Step 3: Cross multiply
    651,630,699.20x = 977,446,048.80 × 651,630,699.20
  4. Step 4: Simplify right side
    651,630,699.20x = 636,933,852,209,821,312
  5. Step 5: Solve for x
    x = 636,933,852,209,821,312/651,630,699.20
  6. Step 6: Final answer
    x = 977,446,048.80

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Similar ratio
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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.