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Finding the Fourth Proportional to 623,587.50, 860,688.48 and 405,416.48

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Solution

The fourth proportional to 623,587.50, 860,688.48 and 405,416.48 is: 559,564.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,587.50 : 860,688.48 = 405,416.48 : x
  2. Step 2: Convert to fraction form
    623,587.50/860,688.48 = 405,416.48/x
  3. Step 3: Cross multiply
    623,587.50x = 860,688.48 × 405,416.48
  4. Step 4: Simplify right side
    623,587.50x = 348,937,289,634.71
  5. Step 5: Solve for x
    x = 348,937,289,634.71/623,587.50
  6. Step 6: Final answer
    x = 559,564.28

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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.