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Finding the Fourth Proportional to 514,421.15, 710,087.51 and 418,761.77

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Solution

The fourth proportional to 514,421.15, 710,087.51 and 418,761.77 is: 578,042.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,421.15 : 710,087.51 = 418,761.77 : x
  2. Step 2: Convert to fraction form
    514,421.15/710,087.51 = 418,761.77/x
  3. Step 3: Cross multiply
    514,421.15x = 710,087.51 × 418,761.77
  4. Step 4: Simplify right side
    514,421.15x = 297,357,500,038.96
  5. Step 5: Solve for x
    x = 297,357,500,038.96/514,421.15
  6. Step 6: Final answer
    x = 578,042.92

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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.