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Finding the Fourth Proportional to 676,848.79, 933,950.41 and 418,985.11

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Solution

The fourth proportional to 676,848.79, 933,950.41 and 418,985.11 is: 578,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,848.79 : 933,950.41 = 418,985.11 : x
  2. Step 2: Convert to fraction form
    676,848.79/933,950.41 = 418,985.11/x
  3. Step 3: Cross multiply
    676,848.79x = 933,950.41 × 418,985.11
  4. Step 4: Simplify right side
    676,848.79x = 391,311,315,268.40
  5. Step 5: Solve for x
    x = 391,311,315,268.40/676,848.79
  6. Step 6: Final answer
    x = 578,136.98

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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.