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Finding the Fourth Proportional to 1,054,600.90, 1,455,342 and 571,155

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Solution

The fourth proportional to 1,054,600.90, 1,455,342 and 571,155 is: 788,189.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054,600.90 : 1,455,342 = 571,155 : x
  2. Step 2: Convert to fraction form
    1,054,600.90/1,455,342 = 571,155/x
  3. Step 3: Cross multiply
    1,054,600.90x = 1,455,342 × 571,155
  4. Step 4: Simplify right side
    1,054,600.90x = 831,225,860,010
  5. Step 5: Solve for x
    x = 831,225,860,010/1,054,600.90
  6. Step 6: Final answer
    x = 788,189.98

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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.