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Finding the Fourth Proportional to 623,188.92, 860,710.08 and 418,885.14

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Solution

The fourth proportional to 623,188.92, 860,710.08 and 418,885.14 is: 578,538.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,188.92 : 860,710.08 = 418,885.14 : x
  2. Step 2: Convert to fraction form
    623,188.92/860,710.08 = 418,885.14/x
  3. Step 3: Cross multiply
    623,188.92x = 860,710.08 × 418,885.14
  4. Step 4: Simplify right side
    623,188.92x = 360,538,662,360.21
  5. Step 5: Solve for x
    x = 360,538,662,360.21/623,188.92
  6. Step 6: Final answer
    x = 578,538.31

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Double scale
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1.5x scale

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.