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Finding the Fourth Proportional to 8,473,902.30, 12,710,853.45 and 7,851,822.30

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Solution

The fourth proportional to 8,473,902.30, 12,710,853.45 and 7,851,822.30 is: 11,777,733.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,473,902.30 : 12,710,853.45 = 7,851,822.30 : x
  2. Step 2: Convert to fraction form
    8,473,902.30/12,710,853.45 = 7,851,822.30/x
  3. Step 3: Cross multiply
    8,473,902.30x = 12,710,853.45 × 7,851,822.30
  4. Step 4: Simplify right side
    8,473,902.30x = 99,803,362,570,741.92
  5. Step 5: Solve for x
    x = 99,803,362,570,741.92/8,473,902.30
  6. Step 6: Final answer
    x = 11,777,733.45

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Double scale
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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.